Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Numerator:
Net earnings (loss) from continuing operations:	$ 2,150	$ (2,877)	$ 2,052	$ (3,309)
Net earnings (loss) from discontinued operations:	$ 133	$ (532)	$ (914)	$ (1,961)
Denominator:
Weighted-average common shares outstanding (in shares)	21,847	25,167	22,084	26,015
Effect of dilutive securities from stock-based compensation plans	27	0	30	0
Weighted-average diluted common shares outstanding:	21,874	25,167	22,114	26,015
Basic earnings (loss) per common share from continuing operations (usd per share)	$ 0.10	$ (0.11)	$ 0.09	$ (0.13)
Basic earnings (loss) per common share from discontinued operations (usd per share)	0.01	(0.03)	(0.04)	(0.07)
Total basic earnings (loss) per common share (usd per share)	0.11	(0.14)	0.05	(0.20)
Diluted earnings (loss) per common share from continuing operations (usd per share)	0.10	(0.11)	0.09	(0.13)
Diluted earnings (loss) per common share from discontinued operations (usd per share)	0.01	(0.03)	(0.04)	(0.07)
Total diluted earnings (loss) per common share (usd per share)	$ 0.11	$ (0.14)	$ 0.05	$ (0.20)