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DEBT - Commitment Letter (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 15, 2016	Jun. 08, 2016	Mar. 31, 2017	Dec. 31, 2016	Nov. 10, 2016	Oct. 27, 2016	Oct. 06, 2016	Jun. 29, 2016	Mar. 31, 2016	Dec. 31, 2014	Dec. 03, 2013	Aug. 30, 2013	Aug. 20, 2010	Aug. 12, 2010
Line of Credit Facility
Common Stock, Par or Stated Value Per Share			$ 0.01	$ 0.01
Series A Preferred Stock | John C. Wobensmith
Line of Credit Facility
Purchase price (in dollars per share)						$ 4.85
Series A Preferred Stock | Other Investors, including John C. Wobensmith
Line of Credit Facility
Commitment to purchase convertible preferred stock						$ 38,600
Series A Preferred Stock | Private placement
Line of Credit Facility
Purchase price (in dollars per share)	$ 4.85
Issuance of stock (in shares)	27,061,856
Issuance of stock excluding services (in shares)	25,773,196
Additional shares issued as commitment fee (in shares)	1,288,660
Second Amended Commitment Letter
Line of Credit Facility
Common Stock, Par or Stated Value Per Share							$ 0.01
Second Amended Commitment Letter | Series A Preferred Stock
Line of Credit Facility
Purchase price (in dollars per share)							$ 4.85
Commitment of shares to be purchased							1,288,660
Commitment Letter
Line of Credit Facility
Maximum borrowing capacity		$ 400,000
Minimum | Amended Commitment Letter
Line of Credit Facility
Minimum cash requirement through the end of the waiver period								$ 25,000
Maximum | Amended Commitment Letter
Line of Credit Facility
Maximum cash withdrawal under covenant							$ 10,000
Reduction of cash under covenants (per vessel)							250
Maximum | Second Amended Commitment Letter | Series A Preferred Stock
Line of Credit Facility
Equity Financing							$ 125,000
Centerbridge Partners L.P | Firm Commitment | Series A Preferred Stock
Line of Credit Facility
Commitment of shares to be purchased							6,597,938
Commitment to purchase convertible preferred stock							$ 32,000
Centerbridge Partners L.P | Backstop Commitment | Series A Preferred Stock
Line of Credit Facility
Commitment of shares to be purchased							3,402,062
Centerbridge Partners L.P | Commitment Letter
Line of Credit Facility
Equity financing to be provided by each equity commitment		31,200
Strategic Value Partners LLC | Firm Commitment | Series A Preferred Stock
Line of Credit Facility
Commitment of shares to be purchased							7,628,866
Commitment to purchase convertible preferred stock							$ 37,000
Strategic Value Partners LLC | Backstop Commitment | Series A Preferred Stock
Line of Credit Facility
Commitment of shares to be purchased							2,371,134
Strategic Value Partners LLC | Commitment Letter
Line of Credit Facility
Equity financing to be provided by each equity commitment		17,300
Apollo Global Management LLC | Firm Commitment | Series A Preferred Stock
Line of Credit Facility
Commitment of shares to be purchased							3,587,629
Commitment to purchase convertible preferred stock							$ 17,400
Apollo Global Management LLC | Backstop Commitment | Series A Preferred Stock
Line of Credit Facility
Commitment of shares to be purchased							2,185,568
Apollo Global Management LLC | Commitment Letter
Line of Credit Facility
Equity financing to be provided by each equity commitment		$ 14,000
Secured Debt | $100 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity									$ 100,000					$ 100,000
Secured Debt | $22 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity									22,000			$ 22,000
Secured Debt | $253 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity									253,000				$ 253,000
Secured Debt | $400 Million Credit Facility
Line of Credit Facility
Maximum borrowing capacity			$ 400,000	$ 400,000	$ 400,000
Secured Debt | $44 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity									44,000		$ 44,000
Line of Credit Facility | $148 Million Credit Facility
Line of Credit Facility
Maximum borrowing capacity									$ 148,000	$ 148,000

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