Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Oct. 02, 2015	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Accrued compensation and benefits	$ 10,781	$ 7,357
Accrued warranty	3,300	3,335	$ 3,529	$ 3,044
Accrued restructuring	1,852	1,652
Accrued contingent considerations	3,821
Accrued professional services fees and other	10,320	8,838
Total	$ 30,074	$ 21,182