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Long-Term Debt (Details Textual) - USD ($)	3 Months Ended
	Mar. 28, 2019	Mar. 29, 2018	Dec. 27, 2018	Mar. 01, 2018	Jan. 28, 2018
Derivative, Amount of Hedged Item				$ 50,000,000
Interest Expense	$ 3,059,000	$ 3,309,000
Revolving Credit Facility [Member]
Repayments of Notes Payable	$ 14,653,000
Interest Rate Swap [Member]
Derivative, Fixed Interest Rate					0.96%
Interest Expense		$ 13,000
Interest Rate Swap Agreements One [Member]
Derivative, Fixed Interest Rate	2.559%
Derivative Liability, Notional Amount	$ 25,000,000
Debt Instrument, Maturity Date	Mar. 01, 2021
Debt Instrument, Interest Rate, Basis for Effective Rate	one-month LIBOR 2.50%
Interest Rate Swap Agreements Two [Member]
Derivative, Fixed Interest Rate	2.687%
Derivative Liability, Notional Amount	$ 25,000,000
Debt Instrument, Maturity Date	Mar. 01, 2023
Debt Instrument, Interest Rate, Basis for Effective Rate	one-month LIBOR 2.50%
Interest Rate Fair Value Hedge Liability at Fair Value	$ 719,000		$ 205,000

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