Long-Term Debt (Debt Schedule) (Details) - USD ($)	Mar. 30, 2019	Dec. 29, 2018	Mar. 10, 2015
Debt Instrument [Line Items]
Principal amount	$ 236,158,000
Line of Credit \| Term Loan
Debt Instrument [Line Items]
Principal amount			$ 350,000,000
Unamortized original issue discount and debt costs	(2,700,000)	$ (3,386,000)	$ (3,500,000)
Less: Current portion of long-term debt	(7,796,000)	(8,290,000)
Long-term debt, net of current portion	$ 225,662,000	$ 251,357,000

Face (par) amount of debt instrument at time of issuance.

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Amount, after accumulated amortization, of debt discount.

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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 of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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