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VOYAGE REVENUE (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 02, 2018 | Jan. 01, 2018
Current Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Due from charterers | $ 22,306 |  |  |  | $ 12,855 |  |  |  | $ 22,306 | $ 12,855 |  | $ 12,208 |
Prepaid expenses and other current assets | 10,449 |  |  |  | 7,338 |  |  |  | 10,449 | 7,338 |  | 7,813 |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable and accrued expenses | 29,143 |  |  |  | 23,230 |  |  |  | 29,143 | 23,230 |  | 23,224 |
Deferred revenue | 6,404 |  |  |  | 4,722 |  |  |  | 6,404 | 4,722 |  | 5,215 |
Equity |  |  |  |  |  |  |  |  |  |  |  |  |
Retained deficit | (687,272) |  |  |  | (653,673) |  |  |  | (687,272) | (653,673) |  | $ (654,332) |
Income statement |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 112,185 | $ 92,263 | $ 86,157 | $ 76,916 | $ 74,918 | $ 51,161 | $ 45,370 | $ 38,249 | 367,522 | 209,698 | $ 135,586 |  |
Voyage expenses |  |  |  |  |  |  |  |  | 114,855 | 25,321 | 13,227 |  |
Net loss |  |  |  |  |  |  |  |  | $ (32,940) | $ (58,725) | $ (217,757) |  |
Net loss per share-basic | $ 0.44 | $ 0.14 | $ (0.03) | $ (1.61) | $ 0.07 | $ (0.90) | $ (0.42) | $ (0.47) | $ (0.86) | $ (1.71) | $ (30.03) |  |
Net loss per share-diluted | $ 0.44 | $ 0.14 | $ (0.03) | $ (1.61) | $ 0.07 | $ (0.90) | $ (0.42) | $ (0.47) | $ (0.86) | $ (1.71) | $ (30.03) |  |
Change in assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in due from charterers |  |  |  |  |  |  |  |  | $ (10,099) | $ (2,482) | $ 213 |  |
Increase in prepaid expenses and other current assets |  |  |  |  |  |  |  |  | (6,626) | (5,875) | 1,010 |  |
Increase in accounts payable and accrued expenses |  |  |  |  |  |  |  |  | 2,571 | 1,494 | (5,309) |  |
Increase in deferred revenue |  |  |  |  |  |  |  |  | 1,190 | 3,234 | 430 |  |
Voyage |  |  |  |  |  |  |  |  |  |  |  |  |
Income statement |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 367,522 | 209,698 | 133,246 |  |
Profit Sharing |  |  |  |  |  |  |  |  |  |  |  |  |
Income statement |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 2,325 | 3,415 |  |
Time Charter |  |  |  |  |  |  |  |  |  |  |  |  |
Income statement |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 168,452 | $ 181,206 | $ 133,246 |  |
Accounting Standards Update 2014-09 | Calculated under Revenue Guidance in Effect before Topic 606 |  |  |  |  |  |  |  |  |  |  |  |  |
Current Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Due from charterers | $ 26,593 |  |  |  |  |  |  |  | 26,593 |  |  |  |
Prepaid expenses and other current assets | 8,159 |  |  |  |  |  |  |  | 8,159 |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable and accrued expenses | 29,171 |  |  |  |  |  |  |  | 29,171 |  |  |  |
Deferred revenue | 5,795 |  |  |  |  |  |  |  | 5,795 |  |  |  |
Equity |  |  |  |  |  |  |  |  |  |  |  |  |
Retained deficit | (684,694) |  |  |  |  |  |  |  | (684,694) |  |  |  |
Income statement |  |  |  |  |  |  |  |  |  |  |  |  |
Voyage expenses |  |  |  |  |  |  |  |  | 116,698 |  |  |  |
Net loss |  |  |  |  |  |  |  |  | $ (31,021) |  |  |  |
Net loss per share-basic |  |  |  |  |  |  |  |  | $ (0.81) |  |  |  |
Net loss per share-diluted |  |  |  |  |  |  |  |  | $ (0.81) |  |  |  |
Change in assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in due from charterers |  |  |  |  |  |  |  |  | $ (13,738) |  |  |  |
Increase in prepaid expenses and other current assets |  |  |  |  |  |  |  |  | (4,811) |  |  |  |
Increase in accounts payable and accrued expenses |  |  |  |  |  |  |  |  | 2,593 |  |  |  |
Increase in deferred revenue |  |  |  |  |  |  |  |  | 1,073 |  |  |  |
Accounting Standards Update 2014-09 | Calculated under Revenue Guidance in Effect before Topic 606 | Voyage |  |  |  |  |  |  |  |  |  |  |  |  |
Income statement |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 371,284 |  |  |  |
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606 |  |  |  |  |  |  |  |  |  |  |  |  |
Current Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Due from charterers | (4,287) |  |  |  |  |  |  |  | (4,287) |  |  |  | $ (647)
Prepaid expenses and other current assets | 2,290 |  |  |  |  |  |  |  | 2,290 |  |  |  | 475
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable and accrued expenses | (28) |  |  |  |  |  |  |  | (28) |  |  |  | (6)
Deferred revenue | 609 |  |  |  |  |  |  |  | 609 |  |  |  | 493
Equity |  |  |  |  |  |  |  |  |  |  |  |  |
Retained deficit | $ (2,578) |  |  |  |  |  |  |  | (2,578) |  |  |  | $ (659)
Income statement |  |  |  |  |  |  |  |  |  |  |  |  |
Voyage expenses |  |  |  |  |  |  |  |  | (1,843) |  |  |  |
Net loss |  |  |  |  |  |  |  |  | $ (1,919) |  |  |  |
Net loss per share-basic |  |  |  |  |  |  |  |  | $ (0.05) |  |  |  |
Net loss per share-diluted |  |  |  |  |  |  |  |  | $ (0.05) |  |  |  |
Change in assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in due from charterers |  |  |  |  |  |  |  |  | $ 3,639 |  |  |  |
Increase in prepaid expenses and other current assets |  |  |  |  |  |  |  |  | (1,815) |  |  |  |
Increase in accounts payable and accrued expenses |  |  |  |  |  |  |  |  | (22) |  |  |  |
Increase in deferred revenue |  |  |  |  |  |  |  |  | 117 |  |  |  |
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606 | Voyage |  |  |  |  |  |  |  |  |  |  |  |  |
Income statement |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ (3,762) |  |  |  |

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