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Long-Term Debt (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 27, 2019	Jun. 28, 2018	Jun. 27, 2019	Jun. 28, 2018	Dec. 27, 2018	Mar. 01, 2018	Jan. 28, 2018
Derivative, Amount of Hedged Item						$ 50,000,000
Interest Expense	$ 3,093,000	$ 3,511,000	$ 6,152,000	$ 6,820,000
Revolving Credit Facility [Member]
Repayments of Notes Payable			$ 14,638,000
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%		2.559%
Derivative Liability, Notional Amount	$ 25,000,000		$ 25,000,000
Interest Rate Swap Agreements One [Member] | LIBOR
Debt Instrument, Basis Spread on Variable Rate			2.50%
Interest Rate Swap Agreements Two [Member]
Derivative, Fixed Interest Rate	2.687%		2.687%
Derivative Liability, Notional Amount	$ 25,000,000		$ 25,000,000
Interest Rate Fair Value Hedge Liability at Fair Value	$ 1,311,000		$ 1,311,000		$ 205,000
Interest Rate Swap Agreements Two [Member] | LIBOR
Debt Instrument, Basis Spread on Variable Rate			2.50%

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