Summarized Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 130,064	$ 132,676	$ 144,117	$ 151,205	$ 139,194	$ 141,661	$ 164,335	$ 156,348	$ 558,062	$ 601,538	$ 623,649
Gross Profit	36,015	35,918	44,536	48,171	40,254	41,686	50,581	45,757	164,640	178,278	161,279
Income (loss) from continuing operations	(1,247)	424	5,684	(3,336)	(125)	631	10,925	2,622	1,525	14,053	8,961
Income (loss) from discontinued operations, net	(211)	(10)	(190)	(57)	896	(298)	494	2,617	(468)	3,709	(17,642)
Net income (loss)	$ (1,458)	$ 414	$ 5,494	$ (3,393)	$ 771	$ 333	$ 11,419	$ 5,239	$ 1,057	$ 17,762	$ (8,681)
Basic (in dollars per share)	$ (0.04)	$ 0.01	$ 0.19	$ (0.11)	$ 0	$ 0.02	$ 0.35	$ 0.08	$ 0.05	$ 0.46	$ 0.28
Diluted (in dollars per share)	(0.04)	0.01	0.19	(0.11)	0	0.02	0.35	0.08	0.05	0.45
Basic (in dollars per share)	(0.01)	0.00	(0.01)	0.00	0.03	(0.01)	0.02	0.08	(0.02)	0.12	(0.55)
Diluted (in dollars per share)	(0.01)	0.00	(0.01)	0.00	0.03	(0.01)	0.02	0.08	(0.02)	0.12	(0.54)
Basic (in dollars per share)	(0.05)	0.01	0.19	(0.11)	0.03	0.01	0.37	0.16	0.03	0.58	(0.27)
Diluted (in dollars per share)	$ (0.05)	$ 0.01	$ 0.18	$ (0.11)	$ 0.03	$ 0.01	$ 0.37	$ 0.16	$ 0.03	$ 0.57	$ (0.27)