Supplemental Disclosures of Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 24, 2021	Dec. 25, 2020	Dec. 27, 2019
Supplemental Cash Flow Elements [Abstract]
Cash paid for income taxes, net of cash received	$ (230)	$ 308	$ 6,046
Cash paid for interest	15,387	18,182	16,271
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	25,111	25,090	25,302
Operating cash flows from finance leases	555	3,856	96
ROU assets obtained in exchange for lease liabilities:
Operating leases	32,741	7,201	155,027
Finance leases	536	16,063	4,183
Non-cash investing and financing activities:
Warrants issued for acquisition	1,120	0	0
Contingent earn-out liabilities for acquisitions	5,500	3,464	7,929
Convertible notes issued for acquisitions	$ 0	$ 0	$ 4,000

Noncash Or Part Noncash Acquisition, Noncash Financial Or Equity Instrument Consideration, Warrants Issued, Value

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Amount of interest paid on finance lease liability.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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The total amount of [all] liabilities that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The fair value of notes issued in noncash investing and financing activities.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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