EARNINGS PER COMMON SHARE - Basic and Diluted Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net loss
Loss from continuing operations	$ (1,918)	$ (7,462)	$ (26,100)	$ (8,375)
Income (loss) from discontinued operations, net of income taxes	(2,956)	65	(6,716)	564
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	(3,689)	65	(7,449)	564
Net loss	$ (4,874)	$ (7,397)	$ (32,816)	$ (7,811)
Per common share – basic
Loss from continuing operations (in dollars per share)	$ (0.30)	$ (1.17)	$ (4.04)	$ (1.32)
Loss from discontinued operations (dollars per share)	(0.45)	0.01	(1.04)	0.09
Net loss per common share – basic (dollars per share)	(0.75)	(1.16)	(5.08)	(1.23)
Per common share – diluted
Loss from continuing operations (dollars per share)	(0.30)	(1.17)	(4.04)	(1.32)
Loss from discontinued operations (dollars per share)	(0.45)	0.01	(1.04)	0.09
Net income (loss) per common share – diluted (dollars per share)	$ (0.75)	$ (1.16)	$ (5.08)	$ (1.23)
Weighted Average Common Shares Outstanding:
Basic (shares)	6,470	6,400	6,455	6,362
Diluted (shares)	6,470	6,400	6,455	6,362