Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Sales	$ 315,249	$ 311,633	$ 329,459
Cost of sales	224,851	224,755	236,220
Gross profit	90,398	86,878	93,239
Selling, general and administrative expenses	81,271	81,045	79,533
Restructuring charges	3,558	0	0
Impairment charges	0	5,766	6,239
Other expense, net	632	514	471
Income (loss) from operations	4,937	(447)	6,996
Interest expense	655	737	1,128
Interest income	(156)	(59)	(64)
Income (loss) from continuing operations before income taxes	4,438	(1,125)	5,932
Income taxes	1,828	1,233	1,537
Net income (loss) from continuing operations	2,610	(2,358)	4,395
Gain from disposal of discontinued operation, net of tax	0	218	4,890
Income from discontinued operations, net of tax	0	0	642
Net income (loss)	$ 2,610	$ (2,140)	$ 9,927
Basic earnings (loss) per share:
Continuing operations (in dollars per share)	$ 0.20	$ (0.19)	$ 0.37
Disposal of discontinued operation (in dollars per share)	0.00	0.02	0.41
Discontinued operations (in dollars per share)	0.00	0.00	0.06
Basic (loss) earnings per share (in dollars per share)	0.20	(0.17)	0.84
Diluted (loss) earnings per share:
Continuing operations (in dollars per share)	0.20	(0.19)	0.37
Disposal of discontinued operation (in dollars per share)	0.00	0.02	0.41
Discontinued operations (in dollars per share)	0.00	0.00	0.05
Diluted (loss) earnings per share (in dollars per share)	0.20	(0.17)	0.83
Cash dividends declared per share: (in dollars per share)	$ 0.08	$ 0.08	$ 0.08