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DEBT - $253M and $100M Term Loans (Details) - Secured Debt $ in Thousands |  |  |  |  |  |  |  | 1 Months Ended | 7 Months Ended | 12 Months Ended | 15 Months Ended |  |  |  |  |  |
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Mar. 29, 2016 USD ($) | Mar. 11, 2016 USD ($) | Jul. 29, 2015 USD ($) | Apr. 30, 2015 USD ($) | Jul. 09, 2014 USD ($) | Aug. 20, 2010 USD ($) tranche item | Aug. 12, 2010 USD ($) tranche item | Oct. 31, 2015 USD ($) | Jul. 31, 2015 item | Oct. 31, 2015 item | Dec. 31, 2010 USD ($) | Mar. 31, 2011 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Jan. 01, 2014 USD ($) | Aug. 01, 2012 USD ($) | Dec. 21, 2011 USD ($) | Sep. 30, 2010 item
$253 Million Term Loan Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 253,000 | $ 253,000 |  |  |  |
Restricted cash |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,750 |  |  |  |
Number of unencumbered vessels adding as additional collateral to cover the shortfall of fair value | item |  |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |
Prepayment of the outstanding indebtedness |  | $ 5,075 | $ 1,650 |  |  |  |  | $ 5,075 |  |  |  |  |  |  |  |  |  |
Drawdowns during the period |  |  |  |  |  |  |  |  |  |  | $ 253,000 |  |  |  |  |  |  |
Paydown of debt |  |  |  |  | $ 5,075 |  |  |  |  |  |  |  |  |  |  |  |  |
Payment of upfront fees |  |  |  | $ 350 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 142,740 |  |  |  |
$100 Million Term Loan Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 | 100,000 |  |  |  |
Number of unencumbered vessels adding as additional collateral to cover the shortfall of fair value | item |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |
Paydown of debt |  |  |  |  | 1,923 |  |  |  |  |  |  |  |  |  |  |  |  |
Prepayment of amortization payment before due date | $ 1,923 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment of upfront fees |  |  |  | 165 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 58,899 |  |  |  |
$100 Million and $253 Million Term Loan Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum cash balance required per vessel owned |  |  |  | $ 750 | $ 750 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum total debt outstanding to value adjusted total assets ratio |  |  |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum percentage of liquidity covenant amended |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum period of available working capital lines |  |  |  | 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |
$100 Million and $253 Million Term Loan Facilities | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 3.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Predecessor | $253 Million Term Loan Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 253,000 |  |  |  |  |  |  |  |  | $ 253,000 | $ 253,000 | $ 253,000 |
Number of vessels acquired | item |  |  |  |  |  | 13 |  |  |  |  |  |  |  |  |  |  |  |
Number of drawdowns per vessel | tranche |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee on unused daily average unutilized commitment (as a percent) |  |  |  |  |  | 1.25% |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels delivered pursuant to the agreement | item |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12
Drawdowns during the period |  |  |  |  |  |  |  |  |  |  |  | $ 253,000 |  |  |  |  |  |
Number of drawdowns | tranche |  |  |  |  |  | 13 |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels owned by each of the entity's wholly-owned ship-owning subsidiaries who act as guarantors | item |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Predecessor | $253 Million Term Loan Facility | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Applicable margin over reference rate for interest payable, before increase (as a percent) |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |
Predecessor | $253 Million Term Loan Facility | Minimum | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reference rate for interest payable |  |  |  |  |  | Three-month LIBOR |  |  |  |  |  |  |  |  |  |  |  |
Predecessor | $253 Million Term Loan Facility | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reference rate for interest payable |  |  |  |  |  | Six-month LIBOR |  |  |  |  |  |  |  |  |  |  |  |
Predecessor | $100 Million Term Loan Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  | $ 100,000 |  |  |
Number of vessels acquired | item |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |
Number of drawdowns per vessel | tranche |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |
Reference rate for interest payable |  |  |  |  |  |  | Three-month LIBOR |  |  |  |  |  |  |  |  |  |  |
Commitment fee on unused daily average unutilized commitment (as a percent) |  |  |  |  |  |  | 1.35% |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |
Drawdowns during the period |  |  |  |  |  |  | $ 20,000 |  |  |  |  |  |  |  |  |  |  |
Profile for Amortization Period |  |  |  |  |  |  | 13 years |  |  |  |  |  |  |  |  |  |  |
Maturity term from the date of the first drawdown |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |  |  |  |
Number of drawdowns | tranche |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |
Number of vessels owned by each of the entity's wholly-owned ship-owning subsidiaries who act as guarantors | item |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |
Predecessor | $100 Million Term Loan Facility | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reference rate for interest payable |  |  |  |  |  |  | One-month LIBOR |  |  |  |  |  |  |  |  |  |  |
Predecessor | $100 Million Term Loan Facility | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reference rate for interest payable |  |  |  |  |  |  | Six-month LIBOR |  |  |  |  |  |  |  |  |  |  |
Predecessor | $100 Million and $253 Million Term Loan Facilities | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Applicable margin over reference rate for interest payable, before increase (as a percent) |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |

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