Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($)	12 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Dec. 28, 2018
Current tax provision:
U.S. federal	$ 2,000	$ 0	$ 0
State	15,000	13,000	10,000
Foreign	3,186,000	2,446,000	1,220,000
Total current provision	3,203,000	2,459,000	1,230,000
Deferred tax provision (benefit):
U.S. federal	(573,000)	(3,003,000)
State	78,000	(373,000)
Foreign	(354,000)	(105,000)	441,000
Total deferred provision (benefit)	(849,000)	(3,481,000)	441,000
Provision (benefit) for income taxes	$ 2,354,000	$ (1,022,000)	$ 1,671,000