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Long-Term Debt Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 29, 2018	May 31, 2018
Debt Instrument [Line Items]
Total debt	$ 296,354	$ 250,034
Deferred debt issuance costs	(624)	(645)
Current maturities of long-term debt	478	679
Long-term debt	$ 295,876	$ 249,355
Revolving credit facility with interest at a variable rate (March 30, 2019 - 3.6%; December 29, 2018 - 3.5%)
Debt Instrument [Line Items]
Interest rate	3.60%	3.50%
Total debt	$ 196,500	$ 150,000
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	$ 478	$ 679
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%