SELECTED QUARTERLY FINANCIAL DATA (Details) (USD $)	3 Months Ended												9 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 28,561,000	$ 33,311,000	$ 40,123,000	$ 34,758,000	$ 36,973,000	$ 45,729,000	$ 49,852,000	$ 61,678,000	$ 49,984,000	$ 55,766,000	$ 65,062,000	$ 106,401,000		$ 136,753,000	$ 194,232,000	$ 277,213,000
Gross profit (loss)	(893,000)	(1,267,000)	707,000	1,424,000	1,247,000	1,324,000	625,000	2,760,000	(687,000)	(5,250,000)	3,458,000	7,214,000		(29,000)	5,956,000	4,735,000
Inventory write-down	(325,000)	(1,900,000)	0	0					0	(3,441,000)	0	0	(1,900,000)	(2,225,000)	0	(3,441,000)
Impairment loss, goodwill					(6,840,000)	0	0	0						0	(6,840,000)
Impairment loss, intangibles	(3,489,000)	0	0	0										(3,489,000)
Income (loss) before other income (expense)	(6,459,000)	(2,987,000)	(1,369,000)	(435,000)	(7,436,000)	(573,000)	(1,358,000)	513,000	(2,892,000)	(7,136,000)	1,739,000	4,299,000		(11,250,000)	(8,854,000)	(3,990,000)
Net income (loss)	$ (10,272,000)	$ (2,191,000)	$ (1,238,000)	$ (115,000)	$ (4,504,000)	$ (886,000)	$ (1,239,000)	$ 9,000	$ (1,825,000)	$ (4,536,000)	$ 313,000	$ 2,167,000		$ (13,816,000)	$ (6,620,000)	$ (3,881,000)
Basic (loss) earnings per share (in dollars per share)	$ (1.45)	$ (0.31)	$ (0.18)	$ (0.02)	$ (0.65)	$ (0.13)	$ (0.18)	$ 0.00	$ (0.26)	$ (0.67)	$ 0.05	$ 0.31		$ (1.96)	$ (0.95)	$ (0.56)
Diluted (loss) earnings per share (in dollars per share)	$ (1.45)	$ (0.31)	$ (0.18)	$ (0.02)	$ (0.65)	$ (0.13)	$ (0.18)	$ 0.00	$ (0.26)	$ (0.67)	$ 0.05	$ 0.31		$ (1.96)	$ (0.95)	$ (0.56)