Amendment Flag Current Fiscal Year End Date Document Fiscal Period Focus Document Fiscal Year Focus Document Information [Line Items] Document Information Document Information [Table] Document Period End Date Document Type Entity Central Index Key Entity Common Stock, Shares Outstanding Entity's units outstanding Entity Current Reporting Status Entity [Domain] Entity Filer Category Entity Registrant Name Entity Voluntary Filers Entity Well-known Seasoned Issuer Legal Entity [Axis] Trading Symbol Inflation rate adjustement to management fees. Adjustment of Management Fee Due to Inflation Inflation rate adjustment to management fees Future minimum administrative and technical management fees payable in aggregate as of the balance sheet date. Administrative and Technical Management Fees Future Minimum Payments Due Total Future administrative and technical management fees payable in the fifth fiscal year following the latest fiscal year. Administrative And Technical Management Fees Future Minimum Payments In Five Years 2019 Future administrative and technical management fees payable in the fourth fiscal year following the latest fiscal year. Administrative and Technical Management Fees Future Minimum Payments in Four Years 2018 Future administrative and technical management fees payable within six months of the balance sheet date. Administrative And Technical Management Fees Future Minimum Payments In Next Six Months 2015 (period) Future administrative and technical management fees payable in the third fiscal year following the latest fiscal year. Administrative and Technical Management Fees Future Minimum Payments in Three Years 2017 Future administrative and technical management fees payable in the second fiscal year following the latest fiscal year. Administrative and Technical Management Fees Future Minimum Payments in Two Years 2016 Future minimum administrative and technical management fees payable after the fifth fiscal year following the latest fiscal year. Administrative And Technical Management Fees Future Minimum Payments Thereafter Thereafter Days notice required for termination of administrative services agreement. Administrative Services Agreement Days Notice Required Administrative services days notice Administrative services agreement duration. Administrative Services Agreement Duration Administrative services duration AdministrativeServicesAgreementIIMember Administrative service charges due to Manager (e) Administrative Services Agreement [Member] Administrative services agreement The vessel Amur River (renamed from Clean Force). Amur River [Member] Amur River (renamed from Clean Force) Annual increase per unit amount of distribution declared and paid to limited and general partners. Annual Increase In Distribution Per Unit Annual increase in cash distribution paid to unitholders Annual increase in cash distribution per unit paid to all unitholders The vessel Arctic Aurora. Arctic Aurora [Member] Arctic Aurora The amount of payment as penalty under the management agreements for the termination of contract after a change of control of the owners and / or the owners' ultimate parent. Cancellation Of Management Agreement Termination Fee Cancellation of management agreement termination fee The expected increase in the annual depreciation expense due to the change in accounting estimate. Change In Accounting Estimate Effect On Depreciation Change in accounting estimate effect on depreciation The charter hire commission rate payable to the management company. Charter Hire Commission Percentage Charter Hire Commission payable to the Management company The vessel Clean Energy. Clean Energy [Member] Clean Energy The amount of charter hire commission payable to the management company over the minimum contractual charter revenues. Commission Payable Over Minimum Contractual Charter Revenues Commission payable over the minimum contractual charter revenues Holders of Units representing a fractional part of the Partnership Interest of all Limited Partners and having the rights and obligations specified with respect to Common Units. Common Limited Partner [Member] Common Limited Partners The number of common limited partner units issued. Common Limited Partners Capital Account Units Issued Common unitholders - units issued The number of common limited partner units offered. Common Limited Partners Capital Account Units Offered Common unitholders - units offered The number of common limited partner units outstanding. Common Limited Partners Capital Account Units Outstanding Common unitholders - units outstanding The amount of the common limited partners' ownership interests. Common Limited Partners Capital Account Common unitholders (20,505,000 units issued and outstanding as at June 30, 2015 and December 31, 2014) The benchmark that serves in the calculation of the percentage of concentration risk, expressed as a percentage. Concentration Risk Benchmark Concentration risk benchmark percentage The total amount drawn down under the credit facility. Credit Facility Amount Drawn Down Credit facility amount drawn down The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit. Credit Facility Amount Outstanding Revolving credit facility amount drawn down The $340 million credit facility the Company has signed with the financial institution Credit Suisse AG. Credit Suisse AG III [Member] $340 million Credit Suisse Senior Secured Revolving Credit Facility The financial institution Credit Suisse AG. Credit Suisse AG II [Member] Credit Suisse AG $340.0 Million Credit Suisse credit facility The $262.1 million credit facility the Company has signed with the financial institution Credit Suisse AG. Credit Suisse AG I [Member] $262.1 million Credit Suisse Senior Secured Revolving Credit Facility Daily management fee payable to the management company. Daily Management Fee Payable Amount Daily management fee Sum of the carrying amount of deferred revenue that is expected to be recognized as a charge against earnings in periods after one year or beyond the normal operating cycle, if longer, in accordance with GAAP. Deferred Revenue Non Current Asset Deferred revenue The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months in accordance with GAAP. Deferred Revenue Non Current Liability Deferred revenue Amounts held on account by related parties on form of security deposits. Deposits To Third Parties [Member] Security deposits to Manager (a) Date of record for distribution of cash or unit to limited and general partner of limited partnership (LP), in CCYY-MM-DD format. Distribution Made To Limited And General Partner Date Of Record Distributions per unit declared - record date Date of distribution for distribution of cash or unit to limited and general partner of limited partnership (LP), in CCYY-MM-DD format. Distribution Made To Limited And General Partner Distribution Date Distributions per unit declared - payment date Refers to the amount of distribution per-unit, declared and paid to limited, subordinated, general partners and other class of interests. Distribution Per Unit Distribution policy which governs the distribution of cash to preferred unitholders of the limited partnership. DistributionPolicyDescription Distribution policy Document and Entity Information Fair value as of the balance sheet date of amounts due from related parties. Due From Related Parties Fair Value Disclosure Due from related parties non current fair value - determined through level 3 inputs Dynagas Finance Inc [Member] Dynagas Finance Inc The Dynagas GP LLC company. Dynagas GP LLC [Member] Dynagas GP LLC The Dynagas Holding Ltd company. Dynagas Holding Ltd [Member] Dynagas Holding Ltd Dynagas LNG Partners LP - Dynagas Finance Inc. [Member] Dynagas LNG Partners LP - Dynagas Finance Inc. The Dynagas Ltd company. Dynagas Ltd [Member] Dynagas Ltd. The subsidiary Dynagas Operating GP LLC Dynagas Operating GP LLC [Member] Dynagas Operating GP LLC The related company Dynagas Operating LP. Dynagas Operating LP [Member] Dynagas Operating LP Automatic renewal of the executive services agreeement with the Management company. Executive Services Agreement Automatic Renewal [Member] Executive Services Agreement - Automatic Renewal Period (in years) of executive services agreement. Executive Services Agreement Duration Period Executive services agreement duration Executive services agreement duration. Executive Services Agreement Duration Executive services agreement duration Initial term of the executive services agreeement with the Management company. Executive Services Agreement Initial Term [Member] Executive Services Agreement - Initial Term The executive services agreeement with the Management company. Executive Services Agreement [Member] Executive services agreement Executive service charges due to Manager (d) Amount fee charged by the management company for the provision of executive services. Executive Services Fee Amount Payable Annual executive services fee Fees relating to the provision of executive services from the management company. Executive Services Fees Related Party Executive services fee (d) Finance Costs First target distribution member. First Target Distribution [Member] First Target Distribution Follow on offering. Follow On Offering [Member] Follow On Offering The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Includes amounts resulting from transactions with related parties, excluding transactions that are eliminated in consolidated or combined financial statements. GeneralAndAdministrativeExpenseIncludingRelatedParty General and administrative expenses (including related party) Party to a partnership business who has unlimited liability. General Partner II [Member] General Partner Covenant reffering to the ratio of the aggregate of the vessels' market values and the net realizable value of any additional security over the outstanding amount of a facility. Hull Cover Ratio Covenant Hull cover ratio Holders of incentive distribution rights in a limited partnership. Incentive Distribution Rights [Member] Holders of IDRs The increase (decrease) during the reporting period in the aggregate amount of receivables to be collected/ of obligations to be paid to related parties. Increase Decrease in due from to Related Parties Due from/to related party The increase (decrease) during the reporting period in the amount of unearned revenue related to revenue collected but not yet recognized as revenue. Increase Decrease in Unearned Revenue Unearned revenue Tabular disclosure of the interest and debt related expenses associated with nonoperating financing activities of the entity. Interest and Finance Costs Table [Text Block] Interest and Finance Costs The entire disclosure for interest and finance costs. Interest and Finance Costs [Text Block] Interest and Finance Costs: Common units other offering costs, paid as of the balance sheet date. Issuance Common Units Other Offering Costs Paid Other offering costs paid Common units other offering costs, incurred up to the balance sheet date. Issuance Common Units Other Offering Costs Other offering costs The LNG carrier's capacity in cubic meters. LNG Carrier Capacity Cubic Meters Cbm Capacity The date the LNG carrier was delivered to the Company. LNG Carrier Delivery Date Delivery Date The date the LNG carrier was built. LNG Carrier Year Built Vessel Year Built Year Built Description of the duration of credit facility. Line of Credit Facility Duration Line of credit facility, duration Number of repayment installments of a credit facility agreement. Line Of Credit Facility Number Of Repayment Installment Line of credit facility, repayment installments Line of revolving credit facility reduction terms. Line of Revolving Credit Facility, Reduction Terms Line of revolving credit facility, reduction terms Covenant reffering to the entity's liquidity. Liquidity Covenant Requirement [Member] Liquidity Covenant Tabular disclosure of the entity's non-vessel owning subsidiaries. List Of Non Vessel Owning Subsidiaries [Table Text Block] Non-Vessel Owning Subsidiaries Tabular disclosure of the entity's vessel owning subsidiaries. List Of Subsidiaries [Table Text Block] Vessel Owning Subsidiaries Tabular disclosure of the amounts outstanding relating to the company's loans and credit facilities. Loans and Credit Facilities Amounts Outstanding Table [Text Block] Loans And Credit Facilities Amounts Outstanding The major charterer B. Major Charterer B [Member] Charterer B The major charterer C. Major Charterer C [Member] Charterer C The major charterer A. Major Charterer [Member] Charterer A Fees relating to management services from the management company. Management Fees Related Party Fees charged for technical and administrative services Management fees (a) Management fees-related party The initial termination date of the management services agreement. Management Services Agreement Initial Termination Date Management services agreement initial termination date Maximum daily management fees. Maximum Daily Management Fee [Member] Maximum Daily Management Fee Minimum daily management fees. Minimum Daily Management Fee [Member] Minimum Daily Management Fee Tabular disclosure for the charter-out agreements, including the future minimum revenues of vessels in operation before reduction for the commissions, expected to be recognized on non-cancelable time charters. Minimum Future Charter Revenues Table [Text Block] Minimum Future Charter Revenues Tabular disclosure for the technical, administrative and commercial management agreement, without taking into consideration the future minimum payments of commissions, expected to be recognized for each of the five years and thereafter following the date of the latest balance sheet date presented. Minimum Future Technical and Commercial Management Fee Table [Text Block] Management Fees Covenant reffering to the Minimum net worth result of Total Assets less Intangible Assets, less Total Borrowings of the Company. Minimum Net Worth Net worth Minimum quarterly distribution. Minimum Quarterly Distribution [Member] Minimum Quarterly Distribution Aggregate amount of net income allocated to common limited partners. Net Income Loss Allocated to Common Limited Partners Common unitholders' interest in Net Income Net income attributable to common unitholders Aggregate amount of net income allocated to subordinated limited partners. Net Income Loss Allocated to Subordinated Limited Partners Subordinated unitholders' interest in Net Income Net Income attributable to subordinated unitholders Lump sum payable to the management company for newbuilding supervision services. New Buildings Supervision Lump Sum Lump sum payable to the management company for the supervision of vessels construction The number of vessels dropped down to the limited partnership (LP) by the managing member or general partner, affiliate of managing member or general partner, or affiliate of LLC or LP. Number Of Vessels Dropped Down Number of vessels dropped down The vessel Ob River (renamed from Clean Power). Ob River [Member] Ob River (renamed from Clean Power in July 2012) Ob River The amount of other partnership expenses, payable to the manager. Other Payable Expense [Member] Other Partnership expenses due to Manager Partnership's wholly-owned vessel owning subsidiaries Pegasus, Lance, Seacrown and Fareastern. Pegasus Lance Seacrown Fareastern [Member] Pegasus-Lance-Seacrown-Fareastern The percentage allocations of the additional available cash from operating surplus among the unitholders, General Partner and the holders of the incentive distribution rights. Percentage Allocations of Additional Available Cash Among Unitholders Percentage allocations of the additional available cash Period (in months) for the calculation of the termination fee, in case of automatic termination of the management agreements. PeriodForCalculationOfManagementAgreementTerminationFee Period for calculation of management agreement termination fee Amount of cash outflow in the form of deemed dividend to unitholders exerting control over the partnership. Preferential Deemed Dividend Preferential deemed dividend Preferential deemed dividend The number of preferred units granted for issuance. Preferred Units Granted Preferred units granted The cash inflow associated with the amount received from entity's first offering of stock to the public, net of issuance costs. Proceeds from Issuance Initial Public Offering Net of Issuance Costs Proceeds from issuance of common units, net of issuance costs The cash inflow from the issuance of common limited partners units during the period, net of commissions and expenses. Proceeds From Issuance Of Common Limited Partners Units Net Of Commissions And Expenses Proceeds from issuance of common units, net of commissions and expenses The cash inflow from the issuance of general partners units during the period. Proceeds From Issuance Of General Partner Units Issuance of general partner units Quarterly increase per unit amount of distribution declared and paid to limited and general partners. Quarterly Increase In Distribution Per Unit Quarterly increase in cash distribution paid to unitholders Quarterly increase in cash distribution per unit, paid to all unitholders Tabular disclosure of related party transactions and resulting balances as included in the balance sheet. Related Party Transactions Balances [Table Text Block] Related parties balances Tabular disclosure of an entity's basic and diluted earnings per unit calculations for each period to each class of units based on the distribution waterfall for cash available for distribution, specified in the partnership agreement. Schedule of Loss Income per Unit Basic and Diluted Table [Text Block] Earnings per Unit The scrap value of vessels per light weight ton (LWT). Scrap Value Per Light Weight Ton Scrap value per light weight ton Second target distribution member. Second Target Distribution [Member] Second Target Distribution The guaranatee paid in advance per vessel under the management agreement. Security Advance Payment per Vessel Advance payment per vessel under management agreement The $340 million credit facility the Company has signed with the financial institution Credit Suisse AG and the $250.0 Million Senior Unsecured Notes due 2019. Senior Secured Credit Facility And Unsecured Notes [Member] $340 million Credit Suisse Senior Secured Revolving Credit Facility & $250.0 Million Senior Unsecured Notes due 2019 Holders of Units representing a fractional part of the Partnership Interest of all Limited Partners and having the rights and obligations specified with respect to Subordinated Units. Subordinated Limited Partner II [Member] Subordinated Limited Partner The number of subordinated limited partner units issued. Subordinated Limited Partners Capital Account Units Issued Subordinated unitholders - units issued The number of subordinated limited partner units outstanding. Subordinated Limited Partners Capital Account Units Outstanding Subordinated unitholders - units outstanding Entity Subordinated Stock Shares Outstanding The amount of the subordinated limited partners' ownership interests. Subordinated Limited Partners Capital Account Subordinated unitholders (14,985,000 units issued and outstanding as at June 30, 2015 and December 31, 2014) The terms related to the agreed management agreement. Terms of Management Agreement Management agreement terms Future target distribution after third quarter member. Thereafter Target Distribution [Member] Thereafter Third target distribution member. Third Target Distribution [Member] Third Target Distribution The duration of time charter agreement in years. Time Charter Years Time charter (in years) Total quarterly distribution target amount member. Total Quarterly Distribution Target Amount [Member] Total Quarterly Distribution Target Amount Holders of Units representing the Partnership Interest of all Limited Partners and having the rights and obligations specified with respect to Common Units. Unithoders of Limited Partnership [Member] Limited Unitholders Vessels' accumulated depreciation. Vessel Accumulated Depreciation [Member] Accumulated Depreciation Vessel's cost. Vessel Cost [Member] Vessel Cost The annual percentage of upward adjustment on vessel management fees per the relevant agreement. Vessel Management Agreement Fees Upwards Adjustment Percentage Management fees annual upward percentage adjustment Vessels' net book value. Vessel Net Book Value [Member] Net Book Value Vessel operating expenses include crew wages and related costs, the cost of insurance, expenses for repairs and maintenance, the cost of spares and consumable stores, lubricant costs and other miscellaneous expenses. Vessel operating expenses also include all peripheral expenses incurred while vessels perform their classification special survey and dry-docking such as spare parts, port dues, tugs, service engineer attendance etc. Vessel Operating Expenses Vessel operating expenses The rate used for the estimation of a vessel's residual value as a percentage over the initial vessel cost. Vessel Residual Value Percentage Percentage for estimation of vessel residual value Vessels Net [Abstract] Disclosure of vessels that are used in the normal conduct of business to produce goods and services and not intended for resale. Vessels Net [Text Block] Vessels, net: Vessel cost net of accumulated depreciation. Vessels Net Vessels, net Costs relating to the voyages performed, primarily consisting of commissions to brokers, port, canal and bunker expenses that are unique to a particular charter, including commissions charged for commercial services provided by a related party. Voyage Expenses Including Related Party Voyage expenses (including related party) Commissions charged for commercial services provided by a related party. Voyage Expenses Related Party Commissions charged for commercial services Voyage expenses-related party (Note 3(a)) Weighted average number of common limited partnership units outstanding determined by relating the portion of time within a reporting period that common partnership units have been outstanding to the total time in that period. Weighted Average Common Limited Partnership Units Outstanding Common units Weighted average number of common units outstanding, basic and diluted Weighted Average Number Units Outstanding Basic and Diluted [Abstract] Weighted average number of units outstanding, basic and diluted: Working capital advances granted to the management company for the provision of management services. Working Capital Advances [Member] Working capital advances granted to the Manager (a) The vessel Yenisei River. Yenisei River [Member] Yenisei River Significant Accounting Policies and Recent Accounting Pronouncements Accounts Payable, Current Trade payables Accounts Payable, Related Parties, Current Due to related party Amount payable to Dynagas Ltd Accounts Receivable, Net, Current Trade receivables Trade receivables, net of allowance for doubtful debt Accrued Liabilities, Current Accrued liabilities Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Balance end of period Balance beginning of period Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Administrative Fees Expense Administrative services fee Administrative services fee (e) Amortization Of Financing Costs Amortization and write-off of deferred financing fees Amortization of deferred financing fees Assets [Abstract] ASSETS Assets: Assets, Current [Abstract] CURRENT ASSETS: Assets Current Total current assets Assets Total assets Capital Unit Class [Domain] Capital Units By Class [Axis] Cash and cash equivalents at end of the period Cash and cash equivalents at beginning of the period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net increase in cash and cash equivalents Class of Stock [Domain] Commitments and Contingencies Disclosure Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies: Commitments and Contingencies Commitments and contingencies Common Unit, Issued Concentration risk benchmark description Concentration Risk, Percentage Percentage of time charter revenue Costs and Expenses [Abstract] EXPENSES: Debt Disclosure Debt Disclosure [Text Block] Long-Term Debt: Debt Instrument [Axis] Debt Instrument Covenant Compliance Covenant compliance Debt Instrument Covenant Description Senior Notes, covenant terms Debt Instrument, Description of Variable Rate Basis Debt instrument, description of variable rate basis Debt Instrument, Face Amount Principal amount Debt Instrument Fair Value Senior notes fair value - determined through level 2 inputs Debt Instrument [Line Items] Debt Instruments Debt Instrument, Name [Domain] Debt Instrument Name [Domain] Debt Instrument Payment Terms Senior notes, terms Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid Debt instrument, periodic payment terms, balloon payment Schedule of Long-term Debt Instruments [Table] Debt Instrument [Table] Debt, Weighted Average Interest Rate Weighted average interest rate Debtor Reorganization Items, Write-off of Deferred Financing Costs and Debt Discounts Deferred Finance Costs, Current, Net Deferred charges, current portion Deferred Finance Costs, Noncurrent, Net Deferred charges, net of current portion Deferred Revenue, Current Unearned revenue Deferred Revenue, Noncurrent Depreciation Depreciation Depreciation (Note 4) Depreciation Derivative Instrument [Axis] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net Loss on derivative financial instruments Derivative [Line Items] Derivatives and Fair Value [Text Block] Fair Value Measurements and Financial Instruments: Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid Distribution Made To Limited Partner Cash Distributions Paid Total distributions paid to all classes of unitholders Distributions paid Distribution Made to Limited Partner, Distributions Declared, Per Unit Quarterly Distribution Made To Limited Partner Distributions Declared Per Unit Distribution Made to Limited Partner, Distributions Paid, Per Unit Distributions paid, Per unit Distribution Type [Domain] Distributions Made To Limited Partner By Distribution Table [Text Block] Percentage allocations of additional available cash from operating surplus amongst the unit holders Distribution Type [Axis] Due from Related Parties, Current Due from related party Due from related parties non current carrying value Due from Related Parties, Noncurrent Due from related party Due from related parties Earnings Per Share Earnings Per Share Basic And Diluted Common unit (basic and diluted) Earnings per common unit, basic and diluted Earnings Per Share Reconciliation [Abstract] Less: Earnings Per Share [Text Block] Earnings per Unit: Earnings Per Unit Revenue, Major Customer [Line Items] Entity Wide Revenue Major Customer Expense Related to Distribution or Servicing and Underwriting Fees Underwriting discounts and commissions Fair Value Measurement [Domain] Fair Value Disclosure Item Amounts [Domain] Fair Value Disclosures Fees And Commissions [Abstract] Management fees-related party Foreign Currency Exchange Rate Translation 1 Eur/US Dollar exchange rate General And Administrative Expense [Abstract] Included in general and administrative expenses General Partner Distributions General Partner [Member] General General Partner General Partners' Capital Account, Units Issued General Partner unitholders - units issued General Partners' Capital Account, Units Outstanding General Partner unitholders - units outstanding Entity General Partner Stock Shares Outstanding General Partners' Capital Account General Partner (35,526 units issued and outstanding as at June 30, 2015 and December 31, 2014) IPO [Member] IPO Income Tax Disclosure Increase (Decrease) in Accounts Payable Trade payables Increase (Decrease) in Accounts Receivable Trade receivables Increase (Decrease) in Accrued Liabilities Accrued liabilities Increase (Decrease) in Deferred Revenue Deferred revenue Increase Decrease In Inventories Inventories Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Prepaid Expense Prepayments and other assets Increase (Decrease) in Restricted Cash Increase in restricted cash Interest and Finance Costs Interest and Debt Expense Total Interest and finance costs Interest Expense Debt Interest expense (Note 5) Total interest incurred on long-term debt Interest Income Other Interest income Interest Rate Swap [Member] Interest Rate Swap Inventory Net Inventories Liabilities and Equity [Abstract] LIABILITIES AND PARTNERS' EQUITY Liabilities and Equity Total liabilities and partners' equity Liabilities, Current [Abstract] CURRENT LIABILITIES: Liabilities, Current Total current liabilities Liabilities, Noncurrent Total non-current liabilities Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest General Partner Interest in Dynagas LNG Partners LP Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest Ownership percentage in Dynagas LNG Partners LP Limited Partner [Member] Limited Partners' Capital Account, Units Outstanding Limited Partners' Capital Account Line of Credit Facility, Amount Outstanding Revolving credit facility amount drawn down Line of Credit Facility, Commitment Fee Amount Line of credit facility, commitment fee amount Commitment fees (Note 5) Line of Credit Facility, Covenant Terms Covenant terms Line Of Credit Facility Expiration Date 1 Line of credit facility, expiration date Line of Credit Facility, Frequency of Payments Line of credit facility, frequency of payments Line of Credit Facility, Maximum Borrowing Capacity Revolving credit facility for general purposes Revolving credit facility borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Line of credit facility, remaining borrowing capacity Loans Payable to Bank Long-term debt Amount oustanding Non-compliance total outstanding balance Long-term Debt, Current Maturities Current portion of long term debt Less current portion Long Term Debt Maturities Repayments Of Principal After Year Five 2020 and thereafter Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 2014 Long-term Debt, Maturities, Repayments of Principal in Year Five 2019 Long-term Debt, Maturities, Repayments of Principal in Year Four 2018 Long-term Debt, Maturities, Repayments of Principal in Year Three 2017 Long-term Debt, Maturities, Repayments of Principal in Year Two 2016 Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year July to December 2015 (period) Long-term Debt, Excluding Current Maturities Long-term debt, net of current portion Long-term portion Long Term Debt Percentage Bearing Fixed Interest Rate Senior notes interest rate Long-term Debt Total long-term debt Total Total Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Customer [Axis] Major Customers [Axis] Major Types Of Debt And Equity Securities [Axis] Major Types Of Debt And Equity Securities [Domain] Management fees for the Period/Year ending December 31, Maximum [Member] Maximum Minimum [Member] Minimum Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Noncontrolling Interest, Ownership Percentage by Parent Customer [Domain] Name Of Major Customer [Domain] Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from/(used in) Financing Activities: Net Cash Provided by (Used in) Financing Activities Net cash used in Financing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from/(used in) Investing Activities: Net Cash Provided by (Used in) Investing Activities Net cash used in Investing Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from Operating Activities: Net Cash Provided by (Used in) Operating Activities Net cash provided by Operating Activities Net Income (Loss) Allocated to General Partners General Partner's interest in Net Income Net Income (Loss) Allocated to Limited Partners Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax [Abstract] Earnings per unit, basic and diluted: New Accounting Pronouncements Policy Policy [Text Block] Recent Accounting Pronouncements: Nonoperating Income (Expense) [Abstract] OTHER INCOME/(EXPENSES): Nonoperating Income (Expense) Total other expenses Notes Payable Senior Unsecured Notes Senior notes carrying value Operating Expenses [Abstract] Included in voyage expenses Operating Income (Loss) Operating income Operating Leases, Future Minimum Payments Receivable, Current 2015 (period) Operating Leases, Future Minimum Payments Receivable, in Five Years 2019 Operating Leases, Future Minimum Payments Receivable, in Four Years 2018 Operating Leases, Future Minimum Payments Receivable, in Three Years 2017 Operating Leases, Future Minimum Payments Receivable, in Two Years 2016 Operating Leases Future Minimum Payments Receivable Thereafter Thereafter Operating Leases, Future Minimum Payments Receivable Future minimum contractual charter revenues Total Organization, Consolidation and Presentation of Financial Statements Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Basis of Presentation and General Information: Other Assets, Noncurrent [Abstract] OTHER NON CURRENT ASSETS: Other Expenses Other, net Other Financial Services Costs Other Other Nonoperating Income Expense Other, net Over Allotment Option [Member] Over-allotment Partner Capital Components [Axis] Partner Capital Components [Domain] Partners' Equity PARTNERS' EQUITY: Partners' Capital Notes Disclosure [Text Block] Partners' Equity: Partners' Capital Total partners' equity Payments of Financing Costs Payment of deferred finance costs Payments Of Stock Issuance Costs Payment of IPO issuance costs and other filing costs Payments To Acquire Property Plant And Equipment Vessel Acquisitions Preferred Stock Dividend Rate Percentage Distribution percentage rate Preferred Stock Liquidation Preference Liquidation preference Preferred Units Issued Preferred units issued Prepaid Expense and Other Assets, Current Prepayments and other assets Prepaid Expense, Current Proceeds From Debt Net Of Issuance Costs Net proceeds from issuance of Senior Notes Proceeds from Issuance Initial Public Offering Proceeds from Initial Public Offering Proceeds from Issuance of Common Limited Partners Units Issuance of common units, net of issuance costs paid Proceeds from Issuance of Common Stock Proceeds from Issuance of Long-term Debt Proceeds from long-term debt Proceeds From Issuance Of Redeemable Preferred Stock Proceeds from issuance of redeemable preferred units, net of discounts Proceeds From Partnership Contribution Issuance of general partner units Proceeds from issuance of general partners units Partnership's Net Income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Partnership's Net Income Net income: Property Plant And Equipment Additions Acquisitions Property, Plant and Equipment, Type [Axis] Property Plant And Equipment By Type [Axis] Balance end of period Balance beginning of period Property, Plant and Equipment, Gross Property, Plant and Equipment [Line Items] Property Plant And Equipment Vessels, Net FIXED ASSETS, NET: Balance end of period Balance beginning of period Property, Plant and Equipment, Net Total fixed assets, net Property, Plant and Equipment, Planned Major Maintenance Activities, Policy [Policy Text Block] Property, Plant and Equipment [Table Text Block] Vessels Table Property, Plant and Equipment, Type [Domain] Property Plant And Equipment Type [Domain] Range [Axis] Range [Domain] Redeemable Preferred Stock [Member] Series A Cumulative Redeemable Preferred Units Related Party [Domain] Related Party Fees And Other Arrangements Limited Liability Company LLCOr Limited Partnership LP [Abstract] Liabilities: Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Related Party Transaction Due From To Related Party [Abstract] Related Party Transaction [Line Items] Related Party Transaction Related Party [Axis] Related Party Transactions By Related Party [Axis] Related Party Transactions Disclosure [Text Block] Transactions with related parties: Repayments Of Debt Amount repaid Repayments of Long-term Debt Repayment of long-term debt Repayments Of Related Party Debt Repayment of loan to related party Repayment of loan to related party Restricted Cash And Cash Equivalents At Carrying Value Restricted cash Restricted Cash and Cash Equivalents, Noncurrent Restricted cash Revenues [Abstract] REVENUES: Revenues Voyage revenues Sale Of Stock Name Of Transaction [Domain] Sales Commissions And Fees Charter hire commissions (a) Schedule of Incentive Distributions Made to Managing Members or General Partners by Distribution [Table Text Block] Schedule of Incentive Distributions Made to General Partners or Unitholders by Distribution Schedule of Maturities of Long-term Debt [Table Text Block] Minimum Annual Principal Payments Property, Plant and Equipment [Table] Schedule Of Property Plant And Equipment [Table] Schedule of Related Party Transactions, by Related Party [Table] Schedule Of Related Party Transactions By Related Party [Table] Schedule Of Related Party Transactions [Table Text Block] Related parties transactions Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Major Charterers Schedule Of Subsidiary Of Limited Liability Company Or Limited Partnership [Table] Senior Notes [Member] Senior Notes Shares Issued Price Per Share Units issued price per unit Significant Accounting Policies [Text Block] Significant Accounting Policies and Recent Accounting Pronouncements: Class of Stock [Axis] Statement [Line Items] Statement of Equity Statement of Cash Flows Statement Of Financial Position Statement of Comprehensive Income Statement of Partners' Capital Statement [Table] Subsequent Event [Member] Subsequent Event Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Events Subsequent Events [Text Block] Subsequent Events: Subsidiaries [Member] Subsidiary Of Limited Liability Company Or Limited Partnership [Line Items] Subsidiary Of Limited Liability Company Or Limited Partnership Subsidiary Of Limited Liability Company Or Limited Partnership Ownership Interest Percentage of ownership in entity Ownership interest in subsidiary Subsidiary Sale Of Stock [Axis] Charter Hire for the Period/Year ending December 31, Unsecured Debt [Member] $250.0 Million Senior Unsecured Notes due 2019 $250.0 million Senior Unsecured Notes Weighted Average Limited Partnership Units Outstanding, Basic