DEBT - Commitment Letter (Details) - USD ($) $ / shares in Units, $ in Thousands			6 Months Ended	12 Months Ended
	Nov. 15, 2016	Jun. 08, 2016	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Oct. 27, 2016	Oct. 06, 2016
Line of Credit Facility
Equity Financing		$ 125,000
Common Stock, Par or Stated Value Per Share				$ 0.01	$ 0.01
Issuance of stock (in shares)			13,102		1,128,713
Series A Preferred Stock
Line of Credit Facility
Issuance of stock (in shares)				27,061,856
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
Minimum | Commitment Letter
Line of Credit Facility
Equity Financing		125,000
Maximum | Second 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 | Private placement
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