Net Income (Loss) Per Common Share - Calculation of Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Numerator: Income (loss):
Income (loss) from continuing operations	$ 6,530	$ (27,474)
Loss from discontinued operations, net of income taxes	(1,371)	(8,589)
Net income (loss)	$ 5,159	$ (36,063)
Denominator: Basic Weighted Average Common Shares Outstanding (in shares)	6,615	6,459
Dilutive effect of stock options, SOSARs, Restricted Shares and Restricted Share Units (in shares)	90	0
Adjusted weighted average common shares outstanding (in shares)	6,705	6,459
Basic net income (loss) per common share
Income (loss) from continuing operations (in dollars per share)	$ 0.99	$ (4.25)
Loss from discontinued operations
Operating loss, net of taxes (in dollars per share)	(0.21)	(1.33)
Discontinued operations (in dollars per share)	(0.21)	(1.33)
Net income (loss) (in dollars per share)	0.78	(5.58)
Diluted net income (loss) per common share
Income (loss) from continuing operations (in dollars per share)	0.97	(4.25)
Operating loss, net of taxes (in dollars per share)	(0.20)	(1.33)
Discontinued operations, net of taxes (in dollars per share)	(0.20)	(1.33)
Diluted net income (loss) per common share (in dollars per share)	$ 0.77	$ (5.58)