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Unearned Revenue/Accrued Revenue, Detail (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Unearned Revenue |  |
Cash received in advance of service provided – Current liability | $ 1,826 | $ 4,925
Deferred revenue resulting from varying charter rates – Current liability | 1,214 | 484
Deferred revenue resulting from varying charter rates – Non-Current liability | 648 | 253
Total Unearned Revenue | 3,688 | 5,662
Accrued Revenue |  |
Resulting from varying charter rates – Current asset | 158 | 475
Resulting from varying charter rates – Non-Current asset | 455 | 614
Total Accrued Revenue | $ 613 | $ 1,089

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