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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator: Income (loss):
Income from continuing operations	$ 2,854	$ 1,839	$ 4,988	$ 1,329
Loss from discontinued operations, net of income taxes	(360)	(387)	(606)	(630)
Net income	$ 2,494	$ 1,452	$ 4,382	$ 699
Denominator: Basic Weighted Average Common Shares Outstanding (in shares)	6,643	6,649	6,607	6,506
Dilutive effect of stock options, SOSARs, Restricted Shares and Restricted Share Units (in shares)	109	55	139	80
Adjusted weighted average common shares outstanding (in shares)	6,752	6,704	6,746	6,586
Per common share – basic
Income from continuing operations (in dollars per share)	$ 0.43	$ 0.28	$ 0.75	$ 0.21
Loss from discontinued operations (in dollars per share)	(0.05)	(0.06)	(0.09)	(0.10)
Net income per common share – basic (in dollars per share)	0.38	0.22	0.66	0.11
Per common share – diluted
Income from continuing operations (in dollars per share)	0.42	0.28	0.74	0.21
Loss from discontinued operations (in dollars per share)	(0.05)	(0.06)	(0.09)	(0.10)
Net income per common share – diluted (in dollars per share)	$ 0.37	$ 0.22	$ 0.65	$ 0.11