Income Taxes - Schedule of U.S. And Foreign Components of Consolidated Income (Loss) Before Income Taxes and Provision for (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Income (loss) before income taxes:
U.S.	$ (15,813)	$ (13,982)	$ (14,253)
Foreign	289	355	209
Loss before income taxes	(15,524)	(13,627)	(14,044)
Current:
Federal	0	(19)	0
State	3	2	2
Foreign	108	169	85
Subtotal	111	152	87
Deferred:
Federal	(141)	0	0
State	(44)	0	0
Foreign	(6)	0	0
Subtotal	(191)	0	0
Provision for income taxes	$ (80)	$ 152	$ 87