Balance Sheet Components - Accrued and Other Current Liabilities (Details) - USD ($) $ in Thousands		Sep. 27, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accrued employee compensation and related expenses		$ 17,270	$ 21,451
Operating lease liability (short-term)		9,453
Accrued warranty		4,581	4,869
Contingent inventory reserves		2,143	2,500
Accrued Avid litigation settlement, current		2,000	1,500
Accrued TVN VDP, current (3)	[1]	1,106	1,585
Others		22,707	20,856
Accrued Liabilities, Current		$ 59,260	$ 52,761

[1] See Note 10, “Restructuring and related charges-TVN VDP,” for additional information on the Company’s TVN VDP liabilities.