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STOCK-BASED COMPENSATION - 2015 EIP Stock Options and Other (Details) - 2015 EIP Plan - USD ($) $ / shares in Units, $ in Thousands						12 Months Ended
	Nov. 05, 2019	Mar. 04, 2019	Feb. 27, 2018	Mar. 23, 2017	Oct. 15, 2016	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 26, 2015
Stock options
Aggregate number of shares of common stock available for awards				2,750,000					400,000
Nonemployee Directors
Additional disclosures
Maximum annual limit for grants (in shares)				500,000
Other Individuals
Additional disclosures
Maximum annual limit for grants (in shares)				1,000,000
Stock Options
Stock options
Vesting percentage of awards		33.33%	33.33%
Vesting period		3 years	3 years
Unrecognized compensation cost
Unamortized compensation cost						$ 590
Future amortization of stock based compensation
2020						431
2021						142
2022						$ 17
Number of Options
Outstanding at beginning of period (in shares)						166,942	88,667
Granted (in shares)		240,540	122,608			240,540	122,608	133,000
Exercisable (in shares)						(85,203)	(44,333)	(44,333)
Outstanding at end of period (in shares)						322,279	166,942	88,667
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)						$ 13.01	$ 11.13
Granted (in dollars per share)						8.33	13.69	$ 11.13
Exercisable (in dollars per share)						12.36	11.13	11.13
Outstanding at end of period (in dollars per share)						9.41	13.01	11.13
Weighted Average Fair Value
Outstanding at beginning of period (in dollars per share)						7.25	6.41
Granted (in dollars per share)		$ 3.76	$ 7.55			3.76	7.55	6.41
Exercisable (in dollars per share)						6.96	6.41	6.41
Outstanding at end of period (in dollars per share)						4.72	$ 7.25	$ 6.41
Weighted Average Exercise Price Of Outstanding Options						$ 10.11
Options Outstanding, Weighted Average Remaining Contractual Life						4 years 11 months 1 day
Options Exercisable, Number of options						173,869
Options Exercisable, Weighted Average Exercise Price						$ 11.41
Options Exercisable, Weighted Average Remaining Contractual Life						3 years 5 months 12 days
Aggregate fair value		$ 904	$ 926
Stock options outstanding - nonvested and exercisable						496,148	255,608
Assumptions and Methodology
Weighted average volatility rate (as a percent)		55.23%	71.94%
Risk-free interest rate ( as a percent)		2.49%	2.53%
Dividend rate ( as a percent)		0.00%	0.00%
Expected life (in years)		4 years	4 years
Stock Options | General and Administrative Expense
Stock options
Amortization expense						$ 850	$ 731	$ 512
Stock Options | Exercise Price - $13.365
Weighted Average Exercise Price
Granted (in dollars per share)	$ 13.365
Stock Options | Exercise Price - $8.065
Weighted Average Exercise Price
Granted (in dollars per share)	8.065
Stock Options | John C. Wobensmith
Stock options
Vesting percentage of awards				33.33%
Vesting period					3 years
Number of Options
Granted (in shares)				133,000
Weighted Average Exercise Price
Granted (in dollars per share)	$ 10.805
Weighted Average Fair Value
Granted (in dollars per share)				$ 6.41
Aggregate fair value				$ 853
Assumptions and Methodology
Weighted average volatility rate (as a percent)				79.80%
Risk-free interest rate ( as a percent)				1.68%
Dividend rate ( as a percent)				0.00%
Expected life (in years)				3 years 9 months 11 days

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