Inventories, net (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 17,087	$ 17,273
Work-in-process	17,259	15,510
Finished products	14,530	17,692
Balance, end of the period	$ 48,876	$ 50,475	[1]

[1] The balance sheet as of December 31, 2016 has been derived from the audited financial statements at that date.