Earning Per Common Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator for basic and diluted earnings (loss) per common share:
Income from continuing operations	$ 2,240	$ 16,578	$ 3,824	$ 23,543
Income (loss) from discontinued operations	72	(9,748)	72	(18,056)
Net income	$ 2,312	$ 6,830	$ 3,896	$ 5,487
Denominator:
Weighted average shares outstanding (in shares)	10,642,000	10,562,000	10,615,000	10,533,000
Denominator for basic income (loss) per common share (in shares)	10,642,000	10,562,000	10,615,000	10,533,000
Effect of dilutive securities:
Stock compensation plans (in shares)	122,000	97,000	129,000	121,000
Dilutive potential common shares (in shares)	122,000	97,000	129,000	121,000
Denominator for diluted income (loss) per common share - adjusted weighted average shares outstanding (in shares)	10,764,000	10,659,000	10,744,000	10,654,000
Continuing operations (usd per share)	$ 0.21	$ 1.57	$ 0.36	$ 2.24
Discontinued operations (usd per share)	0.01	(0.92)	0.01	(1.72)
Basic income (loss) per common share (usd per share)	0.22	0.65	0.37	0.52
Continuing operations (usd per share)	0.21	1.56	0.36	2.21
Discontinued operations (usd per share)	0.01	(0.92)	0.01	(1.69)
Diluted income (loss) per common share (usd per share)	$ 0.22	$ 0.64	$ 0.37	$ 0.52
Anti-dilutive shares (in shares)	0	0	0	0