Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)		12 Months Ended
	Dec. 22, 2017	Jan. 01, 2021	Jan. 03, 2020	Dec. 28, 2018
Increase (decrease) in taxes resulting from:
Computed provision for taxes based on income at statutory rate percentage	35.00%	21.00%	21.00%	21.00%
Permanent differences percentage		0.40%	0.50%	0.50%
State taxes, net of federal income tax benefit percentage		0.90%	(2.20%)	0.10%
State tax benefit percentage		(16.90%)	0.70%	(6.70%)
Foreign tax differential percentage		(27.90%)	(11.60%)	(11.00%)
Expiration of state net operating tax loss carryforwards percentage		3.20%	8.00%	0.00%
Foreign earnings not permanently reinvested, net of the participation exemption percentage		(0.10%)	(0.10%)	(14.00%)
Foreign dividend withholding percentage				4.80%
ASC 718 share based payment adjustment percentage		5.80%		(6.50%)
Incentive stock option compensation percentage		(59.40%)	(0.40%)	(12.70%)
Non-qualified stock option and restricted stock tax deduction in excess of cumulative book deduction percentage		(52.30%)	(12.90%)	(12.70%)
Executive compensation Section 162(m) limitation percentage		43.00%	4.40%	0.90%
GILTI inclusion percentage		54.00%	25.90%	26.80%
Other percentage		(2.50%)	0.90%	0.50%
Valuation allowance percentage		59.30%	(42.00%)	34.20%
Effective tax provision (benefit) percentage		28.50%	(7.80%)	25.20%
Increase (decrease) in taxes resulting from:
Computed provision for taxes based on income at statutory rate		$ 1,736,000	$ 2,735,000	$ 1,394,000
Permanent differences		29,000	60,000	34,000
State taxes, net of federal income tax benefit		74,000	(284,000)	8,000
State tax benefit		(1,397,000)	93,000	(447,000)
Foreign tax differential		(2,304,000)	(1,514,000)	(730,000)
Expiration of state net operating tax loss carryforwards		268,000	1,039,000	0
Foreign earnings not permanently reinvested, net of the participation exemption		(5,000)	(7,000)	(926,000)
Foreign dividend withholding				317,000
ASC 718 share based payment adjustment		476,000		(434,000)
Incentive stock option compensation		(4,907,000)	(55,000)	(842,000)
Non-qualified stock option and restricted stock tax deduction in excess of cumulative book deduction		(4,324,000)	(1,679,000)	(842,000)
Executive compensation Section 162(m) limitation		3,552,000	569,000	60,000
GILTI inclusion		4,461,000	3,372,000	1,780,000
Other		(204,000)	121,000	30,000
Valuation allowance		4,899,000	(5,472,000)	2,269,000
Provision (benefit) for income taxes		$ 2,354,000	$ (1,022,000)	$ 1,671,000