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Derivative Financial Instruments - Interest Rate Swaps (Details) - USD ($) $ in Thousands			12 Months Ended
	Jun. 22, 2020	Mar. 17, 2020	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019	Dec. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount						$ 95,600
Building Term Loan
Derivative Instruments, Gain (Loss) [Line Items]
Debt instrument, interest rate, effective percentage		2.75%
Interest Rate Contract | Building Term Loan
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount		$ 18,000	$ 18,000
Derivative, floor interest rate		0.00%
Derivative, floor interest rate term		1 year	1 year
Interest Rate Swap | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)			$ 451	$ (119)	$ (86)
Interest Rate Swap | Other income, net | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)			(154)	$ (64)	$ 548
Senior Secured Term Loan
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount			$ 16,500
Fixed interest rate, derivative						2.94%
LIBOR | Building Term Loan
Derivative Instruments, Gain (Loss) [Line Items]
Basis spread on variable rate	1.75%	1.75%	1.75%
LIBOR | Senior Secured Term Loan
Derivative Instruments, Gain (Loss) [Line Items]
Derivative variable rate basis spread						2.00%

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- Definition

Derivative, Floor Interest Rate Term

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

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- Definition

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

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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Fixed interest rate related to the interest rate derivative.

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- Definition

Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

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Nominal or face amount used to calculate payment on derivative.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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