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Long-Term Debt Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Apr. 03, 2021	Jan. 02, 2021	May 31, 2018
Debt Instrument [Line Items]
Total debt	$ 175,806	$ 175,365
Deferred debt issuance costs	(455)	(476)
Current maturities of long-term debt	1,261	841
Long-term debt	$ 174,545	$ 174,524
Fixed rate notes due in 2025 with an interest rate of 4.22%
Debt Instrument [Line Items]
Interest rate	4.22%		4.22%
Fixed rate notes due in 2028 with an interest rate of 4.40%
Debt Instrument [Line Items]
Interest rate	4.40%		4.40%
Revolving credit facility with interest at a variable rate (April 3, 2021 - 1.1%; January 2, 2021 - 1.2%)
Debt Instrument [Line Items]
Interest rate	1.10%	1.20%
Total debt	$ 75,000	$ 75,000
Fixed rate notes due in 2025 with an interest rate of 4.22%
Debt Instrument [Line Items]
Total debt	50,000	50,000
Fixed rate notes due in 2028 with an interest rate of 4.40%
Debt Instrument [Line Items]
Total debt	50,000	50,000
Other amounts
Debt Instrument [Line Items]
Total debt	$ 1,261	$ 841