Correction of Accounting Error in Prior Period - (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Error Corrections and Prior Period Adjustments Restatement
Inventory, Net	$ 113,853	$ 109,408
Total current assets	240,729	229,957
Total assets	302,231	281,784
Accumulated deficit	(331,704)	(342,705)
Total stockholders' equity	201,455	183,764	$ 161,856	$ 169,506
Total liabilities and stockholders' equity	$ 302,231	281,784
Previously Reported
Error Corrections and Prior Period Adjustments Restatement
Inventory, Net		115,904
Total current assets		236,453
Total assets		288,280
Accumulated deficit		(336,209)
Total stockholders' equity		190,260
Total liabilities and stockholders' equity		288,280
Adjusted
Error Corrections and Prior Period Adjustments Restatement
Inventory, Net		109,408
Total current assets		229,957
Total assets		281,784
Accumulated deficit		(342,705)
Total stockholders' equity		183,764
Total liabilities and stockholders' equity		281,784
Effect of Change
Error Corrections and Prior Period Adjustments Restatement
Inventory, Net		(6,496)
Total current assets		(6,496)
Total assets		(6,496)
Accumulated deficit		(6,496)
Total stockholders' equity		(6,496)
Total liabilities and stockholders' equity		$ (6,496)