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Partnership Formation and General Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 11 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 18, 2013 | Dec. 31, 2017
General Partner |  |
Related Party Transaction [Line Items] |  |
General Partner Interest in Dynagas LNG Partners LP |  | 0.10%
Common |  |
Related Party Transaction [Line Items] |  |
Limited Partners Capital Account Units Offered | 8,250,000 |
Shares Issued, Price Per Share | $ 18 |
Dynagas Holding Ltd |  |
Related Party Transaction [Line Items] |  |
Ownership percentage in Dynagas LNG Partners LP, including General Partner interest |  | 44.00%
Dynagas Holding Ltd |  |
Related Party Transaction [Line Items] |  |
Limited Partners Capital Account Units Offered | 4,250,000 |
Shares Issued, Price Per Share | $ 18 |
Line of credit facility, maximum borrowing capacity | $ 30,000 |
Arctic LNG |  |
Related Party Transaction [Line Items] |  |
Share capital contribution in connection with refinancing transaction |  | On May 18, 2017, the Partnership refinanced its then existing secured bank debt with the Term Loan B (defined below, please refer to Note 5). In connection with the refinancing transaction (i) Dynagas Equity contributed 100% of the equity interests in Seacrown, Fareastern, Navajo, Solana to Arctic LNG, and (ii) Quinta Group Corp. and Pelta Holdings S.A., the Partnership’s subsidiaries which then owned 100% of the outstanding share capital of Pegasus and Lance, respectively, each contributed 100% of the share capital of Pegasus and Lance to Artic LNG and were subsequently dissolved ((i) and (ii) together, the “Contribution”). Since the Partnership was and continues to be the ultimate shareholder of Arctic LNG, there was no change in the ownership or control of the business as a result of the Contribution, and therefore, the Contribution constitutes a reorganization of companies under common control, and was accounted for in a manner similar to a pooling of interests.

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