EQUITY INCENTIVES - Summary of Equity Incentive Awards Activity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Stock Appreciation Rights
Awards - SARs and Stock Awards - Weighted Average Strike or Grant Price
Beginning balance (in dollars per share)	$ 3.19	$ 3.22
Forfeited (in dollars per share)		1.15
Expired (in dollars per share)	2.56	2.52
Ending balance (in dollars per share)	3.21	3.19
Weighted Average Price, Exercisable (in dollars per share)	$ 1.69	$ 2.14
Awards - SARs and Stock Awards - Number of Shares Under Option or Number of Shares
Beginning Balance (in shares)	938,667	995,983
Forfeited (in shares)		(10,752)
Expired (in shares)	(28,830)	(46,564)
Ending Balance (in shares)	909,837	938,667
Exercisable (in shares)	27,693	56,523
Unvested Stock Awards
Equity incentives
Fair value of Stock Awards vested	$ 0.6	$ 0.2
Awards - SARs and Stock Awards - Weighted Average Strike or Grant Price
Beginning balance (in dollars per share)	$ 1.18	$ 1.44
Granted (in dollars per share)	0.24	0.39
Exercised or Earned (in dollars per share)	0.38	0.30
Forfeited (in dollars per share)		1.46
Ending balance (in dollars per share)	$ 4.90	$ 1.18
Awards - SARs and Stock Awards - Number of Shares Under Option or Number of Shares
Beginning Balance (in shares)	2,401,268	1,735,553
Granted (in shares)	135,000	2,145,000
Exercised or Earned (in shares)	(2,115,000)	(1,435,000)
Forfeited (in shares)		(44,285)
Ending Balance (in shares)	421,268	2,401,268