Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Accrued compensation and benefits	$ 7,357	$ 7,741
Accrued warranty	3,335	3,044	$ 3,315
Accrued restructuring	1,652	109
Accrued professional services fees and other	8,838	8,507
Total	$ 21,182	$ 19,401