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
	Mar. 31, 2021	Mar. 31, 2020
Numerator: Income (loss):
Income (loss) from continuing operations	$ 2,134	$ (510)
Loss from discontinued operations, net of income taxes	(246)	(243)
Net income (loss)	$ 1,888	$ (753)
Denominator: Basic Weighted Average Common Shares Outstanding (in shares)	6,573	6,506
Dilutive effect of stock options, SOSARs, Restricted Shares and Restricted Share Units (in shares)	168	0
Adjusted weighted average common shares outstanding (in shares)	6,741	6,506
Per common share – basic
Income (loss) from continuing operations (in dollars per share)	$ 0.33	$ (0.08)
Loss from discontinued operations (in dollars per share)	(0.04)	(0.04)
Net income (loss) per common share – basic (in dollars per share)	0.29	(0.12)
Per common share – diluted
Income (loss) from continuing operations (in dollars per share)	0.32	(0.08)
Loss from discontinued operations (in dollars per share)	(0.04)	(0.04)
Net income (loss) per common share – diluted (in dollars per share)	$ 0.28	$ (0.12)