UNAUDITED QUARTERLY FINANCIAL INFORMATION (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 25, 2012
Quarterly financial information [Abstract]
Total revenue	$ 84,349	$ 79,624	$ 65,247	$ 66,403	$ 65,104	$ 63,987	$ 64,659	$ 73,724	$ 295,623	$ 267,474	$ 310,746
Total cost of goods sold	39,171	37,938	27,682	27,344	30,412	27,648	25,793	27,099
Net (loss) income	(12,269)	(17,859)	23,649	(4,217)	(14,739)	(9,789)	(3,672)	39	(10,696)	(28,161)	(10,233)
Basic net (loss) income per common share (in dollars per share)	$ (0.17)	$ (0.25)	$ 0.34	$ (0.06)	$ (0.21)	$ (0.14)	$ (0.05)	$ 0.00
Diluted net (loss) income per common share (in dollars per share)	$ (0.17)	$ (0.25)	$ 0.33	$ (0.06)	$ (0.21)	$ (0.14)	$ (0.05)	$ 0.00
Income Tax (Benefit) provision acquisition adjustment	7,242								7,242			7,600
Income tax (benefit) provision related to acquisition before recast			44,315
Income tax (benefit) provision related to acquisition after recast			$ 37,093						$ 37,093	$ 0	$ 0