Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenues	$ 74,123	$ 75,682	$ 222,260	$ 224,631
Cost of goods sold	40,418	44,044	120,119	131,873
Gross profit	33,705	31,638	102,141	92,758
Operating expenses
Sales and marketing expenses	8,633	8,327	26,934	27,227
General and administrative expenses	9,206	11,041	33,773	28,883
Research and development expenses	2,458	3,049	11,292	8,958
Total operating expenses	20,297	22,417	71,999	65,068
Operating income	13,408	9,221	30,142	27,690
Interest expense, net	(7,100)	(10,585)	(31,599)	(31,704)
Loss on extinguishment of debt			(15,528)
Other income (expense), net	(183)	441	234	(148)
Income (loss) before income taxes	6,125	(923)	(16,751)	(4,162)
Provision (benefit) for income taxes	739	(56)	1,911	(374)
Net income (loss)	$ 5,386	$ (867)	$ (18,662)	$ (3,788)
Net income (loss) per common share:
Basic and diluted	$ 0.18	$ (0.05)	$ (0.83)	$ (0.21)
Common shares:
Basic	30,359,516	18,080,968	22,443,257	18,080,496
Diluted	30,761,771	18,080,968	22,443,257	18,080,496