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Long-Term Debt - Credit Facilities And Senior Notes (Table) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Debt Instruments |  |
Total debt | $ 727,600 | $ 722,500
Less deferred financing fees | (13,247) | (6,064)
Total debt, net of deferred finance costs | 714,353 | 716,436
Less current portion, net of deferred financing fees | (2,655) | (31,688)
Long-term debt, net of current portion and deferred financing fees | 711,698 | 684,748
$250 Million Senior Unsecured Notes |  |
Debt Instruments |  |
Senior Unsecured Notes | 250,000 |
$250 Million Senior Unsecured Notes | Dynagas Partners and Dynagas Finance |  |
Debt Instruments |  |
Senior Unsecured Notes | 250,000 | 250,000
$480 Million Term Loan Facility | Arctic LNG and Dynagas Finance LLC |  |
Debt Instruments |  |
Long-term debt | 477,600 | 0
$340 Million Credit Facility | Pegasus, Lance, Seacrown, Fareastern |  |
Debt Instruments |  |
Long-term debt | 0 | 285,000
$200 Million Term Loan Facility | Navajo and Solana |  |
Debt Instruments |  |
Long-term debt | $ 0 | $ 187,500

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