Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jul. 01, 2016	Dec. 31, 2015	Jul. 03, 2015	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Accrued compensation and benefits	$ 8,726	$ 7,357
Accrued warranty	3,179	3,335	$ 3,539	$ 3,044
Accrued restructuring	3,030	1,652
Accrued contingent considerations	3,671
Accrued professional services fees and other	10,298	8,838
Total	$ 28,904	$ 21,182