Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Apr. 01, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Accrued compensation and benefits	$ 11,666	$ 9,647
Accrued warranty	3,925	3,142	$ 3,248	$ 3,335
Accrued restructuring	1,032	1,371
Accrued professional services	1,271	1,237
Accrued contingent considerations	2,531	2,775
Customer deposits	1,904	1,164
Other	8,612	7,612
Total	$ 30,941	$ 26,948