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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Statement [Abstract]      
Revenues $ 293,461 $ 301,600 $ 283,672
Cost of goods sold 157,939 176,081 206,311
Gross profit 135,522 125,519 77,361
Operating expenses      
Sales and marketing expenses 34,740 35,116 35,227
General and administrative expenses 43,894 37,313 33,036
Research and development expenses 14,358 13,673 30,459
Proceeds from manufacturer     (8,876)
Impairment on land     6,406
Total operating expenses 92,992 86,102 96,252
Operating income (loss) 42,530 39,417 (18,891)
Interest expense (38,715) (42,288) (42,915)
Interest income 24 27 104
Loss on extinguishment of debt (15,528)    
Other income (expense), net (89) 478 1,161
Loss before income taxes (11,778) (2,366) (60,541)
Provision for income taxes 2,968 1,195 1,014
Net loss $ (14,746) $ (3,561) $ (61,555)
Net loss per common share:      
Basic and diluted $ (0.60) $ (0.20) $ (3.42)
Weighted average common shares:      
Basic and diluted 24,439,845 18,080,615 18,032,131