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Long-Term Debt Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019	May 31, 2018
Debt Instrument [Line Items]
Total debt	$ 230,290	$ 175,229
Deferred debt issuance costs	(540)	(561)
Current maturities of long-term debt	1,830	790
Long-term debt	$ 228,460	$ 174,439
Revolving credit facility with interest at a variable rate (March 28, 2020 - 2.0%; December 28, 2019 - 2.8%)
Debt Instrument [Line Items]
Interest rate	2.00%	2.80%
Total debt	$ 129,000	$ 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	$ 1,830	$ 790
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%