STOCK-BASED COMPENSATION - Option Activity (Details) - Stock Option - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Weighted Average Remaining Contractual Terms and Aggregate Intrinsic Value
Weighted average fair value option granted	$ 0.0		$ 0.6
2017 Omnibus Incentive Plan
Shares
Outstanding, at the beginning (in shares)	2,308,924
Forfeited or expired (in shares)	(28,800)
Outstanding, at the end (in shares)	2,280,124	2,308,924
Exercisable at the end, Shares	945,556
Vested and expected to vest (in shares)	2,280,124
Weighted Average Exercise Price
Outstanding, at the beginning (in dollars per shares)	$ 8.39
Forfeited or expired (in dollars per shares)	11.80
Outstanding, at the end (in dollars per shares)	8.34	$ 8.39
Exercisable at the end (in dollars per shares)	9.76
Vested and expected to vest (in dollars per share)	$ 8.34
Weighted Average Remaining Contractual Terms and Aggregate Intrinsic Value
Weighted Average Remaining Contractual Terms (Years)	7 years 8 months 12 days	8 years
Exercisable at the end, Weighted Average Remaining Contractual Terms (Years)	7 years 2 months 12 days
Vested and expected to vest (in years)	7 years 8 months 12 days
Aggregate Intrinsic Value, Outstanding, at the beginning (in dollars)	$ 0.2
Aggregate Intrinsic Value, Outstanding at the end (in dollars)		$ 0.2
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years