Long-Term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 29, 2018	May 31, 2018	Dec. 30, 2017
Debt Instrument [Line Items]
Total debt	$ 250,034		$ 276,648
Deferred debt issuance costs	(645)		0
Less: Current maturities of long-term debt	679		36,648
Long-term debt	$ 249,355		$ 240,000
Revolving credit facility with interest at a variable rate (December 29, 2018 - 3.5%; December 30, 2017 - 2.7%)
Debt Instrument [Line Items]
Fixed interest rate	3.515%		2.70%
Total debt	$ 150,000		$ 267,500
Fixed rate notes due in 2025 with an interest rate of 4.22%
Debt Instrument [Line Items]
Fixed interest rate	4.22%	4.22%
Total debt	$ 50,000		0
Fixed rate notes due in 2028 with an interest rate of 4.40%
Debt Instrument [Line Items]
Fixed interest rate	4.40%	4.40%
Total debt	$ 50,000		0
Other amounts
Debt Instrument [Line Items]
Total debt	$ 679		$ 9,148

Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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