EARNINGS (LOSS) PER COMMON SHARE - Schedule of 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, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator: Income (loss):
Income (loss) from continuing operations	$ (2,859)	$ 3,173	$ 2,129	$ 4,502
Loss from discontinued operations, net of income taxes	(744)	(374)	(1,350)	(1,004)
Net income (loss)	$ (3,603)	$ 2,799	$ 779	$ 3,498
Denominator: Basic Weighted Average Common Shares Outstanding (in shares)	6,643	6,577	6,619	6,606
Dilutive effect of stock options, SOSARs, Restricted Shares and Restricted Share Units (in shares)	0	49	156	70
Adjusted weighted average common shares outstanding (in shares)	6,643	6,626	6,775	6,676
Per common share – basic
Income (loss) from continuing operations (in dollars per share)	$ (0.43)	$ 0.48	$ 0.32	$ 0.68
Loss from discontinued operations (in dollars per share)	(0.11)	(0.06)	(0.20)	(0.15)
Net income (loss) per common share – basic (in dollars per share)	(0.54)	0.42	0.12	0.53
Per common share – diluted
Income (loss) from continuing operations (in dollars per share)	(0.43)	0.48	0.31	0.67
Loss from discontinued operations (in dollars per share)	(0.11)	(0.06)	(0.20)	(0.15)
Net income (loss) per common share – diluted (in dollars per share)	$ (0.54)	$ 0.42	$ 0.11	$ 0.52