SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Concentration Risk [Line Items]
Net sales	$ 41,850	$ 39,508	$ 44,741	$ 40,819	$ 51,995	$ 51,886	$ 51,911	$ 46,769	$ 166,918	$ 202,561	$ 202,060
Gross profit	2,047	10,289	12,585	10,703	15,724	15,083	15,898	14,714	35,624	61,419	58,134
Income (loss) from continuing operations					(4,296)	2,322	2,097	1,803	(23,971)	1,926	6,073
Income (loss) from discontinued operations					718	20	219	(316)	0	641	478
Net income (loss)	$ (16,042)	$ (4,233)	$ (1,319)	$ (2,377)	$ (3,578)	$ 2,342	$ 2,316	$ 1,487	$ (23,971)	$ 2,567	$ 6,459
Net income (loss) per share - basic
Continuing operations (in dollars per share)	$ (1.15)	$ (0.30)	$ (0.10)	$ (0.17)	$ (0.32)	$ 0.17	$ 0.15	$ 0.13	$ (1.72)	$ 0.13	$ 0.44
Discontinued operations (in dollars per share)					0.05	0.00	0.02	(0.02)	0.00	0.05	0.03
Net income (loss) (in dollars per share)	(1.15)	(0.30)	(0.10)	(0.17)	(0.27)	0.17	0.17	0.11	(1.72)	0.18	0.47
Net income (loss) per share - diluted
Continuing operations (in dollars per share)	(1.15)	(0.30)	(0.10)	(0.17)	(0.32)	0.17	0.15	0.13	(1.72)	0.13	0.44
Discontinued operations (in dollars per share)					0.05	0.00	0.02	(0.02)	0.00	0.05	0.03
Net income (loss) (in dollars per share)	$ (1.15)	$ (0.30)	$ (0.10)	$ (0.17)	$ (0.27)	$ 0.17	$ 0.17	$ 0.11	$ (1.72)	$ 0.18	$ 0.47
Segment Sold [Member] | Consolidated assets [Member]
Concentration Risk [Line Items]
Concentration risk percentage (less than)										5.00%
Segment Sold [Member] | Consolidated sales [Member]
Concentration Risk [Line Items]
Concentration risk percentage (less than)										5.00%
Segment Sold [Member] | Consolidated operating income [Member]
Concentration Risk [Line Items]
Concentration risk percentage (less than)										5.00%