Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Sales	$ 76,805	$ 68,924	$ 228,289	$ 218,625
Cost of sales	55,046	50,247	164,818	158,767
Gross profit	21,759	18,677	63,471	59,858
Selling, general and administrative expenses	19,925	20,123	60,596	59,376
Restructuring charges	877	0	877	0
Impairment charge	0	5,766	0	5,766
Other expense (income), net	201	(334)	276	249
Income (loss) from operations	756	(6,878)	1,722	(5,533)
Interest expense	161	171	472	569
Interest income	(40)	(15)	(80)	(47)
Income (loss) from continuing operations before income taxes	635	(7,034)	1,330	(6,055)
Income taxes	962	544	1,479	845
Net loss from continuing operations	(327)	(7,578)	(149)	(6,900)
Gain from disposal of discontinued operation, net of tax	0	0	0	218
Net loss	$ (327)	$ (7,578)	$ (149)	$ (6,682)
Basic loss per share:
Continuing operations (in dollars per share)	$ (0.03)	$ (0.60)	$ (0.01)	$ (0.55)
Discontinued operations (in dollars per share)	0.00	0.00	0.00	0.02
Basic loss per share (in dollars per share)	(0.03)	(0.60)	(0.01)	(0.53)
Diluted loss per share:
Continuing operations (in dollars per share)	(0.03)	(0.60)	(0.01)	(0.55)
Discontinued operations (in dollars per share)	0.00	0.00	0.00	0.02
Diluted loss per share (in dollars per share)	(0.03)	(0.60)	(0.01)	(0.53)
Cash dividends declared per share: (in dollars per share)	$ 0.02	$ 0.02	$ 0.06	$ 0.06