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Debt - CMI Term Loan (Details) - USD ($)			6 Months Ended
	Jul. 25, 2016	Jun. 24, 2016	Jun. 27, 2020	Jun. 29, 2019
Debt Instrument [Line Items]
Long-term Debt			$ 50,050,000	$ 58,485,000
CMI Term Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 150,000,000
Debt Instrument, Interest Rate During Period			2.41%
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months, Percentage		5.00%
Long-term Debt, Maturities, Repayments of Principal in Year Two, Percentage		10.00%
Long-term Debt, Maturities, Repayments of Principal in Year Three, Percentage		20.00%
Long-term Debt, Maturities, Repayments of Principal in Year Four, Percentage		30.00%
Long-term Debt, Maturities, Repayments of Principal in Year Five, Percentage		35.00%
Derivative, notional amount		$ 95,600,000
Debt Instrument, Interest Rate, Effective Percentage	2.939%
Long-term Debt			$ 12,500,000
CMI Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%	2.00%	2.00%
CMI Term Loan [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.00%

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Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months, Percentage

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Long-term Debt, Maturities, Repayments of Principal in Year Five, Percentage

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The average effective interest rate during the reporting period.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Nominal or face amount used to calculate payment on derivative.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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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