Debt - Carrying Amounts of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 25, 2021	Dec. 26, 2020
Debt Instrument
Unamortized debt issuance costs	$ (3,441)	$ (4,114)
Total debt	647,731	687,034
Less: Current maturities	(27,619)	0
Total long-term debt	620,112	687,034
Revolving Credit Facility
Debt Instrument
Long-term debt, gross	100,000	130,000
Senior Notes \| Euro Senior Notes, Series A due 2023
Debt Instrument
Long-term debt, gross	137,173	142,679
Senior Notes \| Euro Senior Notes, Series B due 2028
Debt Instrument
Long-term debt, gross	111,380	115,850
Senior Notes \| U.S. Senior Notes, Series A due 2022
Debt Instrument
Long-term debt, gross	25,000	25,000
Senior Notes \| U.S. Senior Notes, Series B due 2027
Debt Instrument
Long-term debt, gross	100,000	100,000
Senior Notes \| U.S. Senior Notes, Series A due 2025
Debt Instrument
Long-term debt, gross	50,000	50,000
Senior Notes \| U.S. Senior Notes, Series B due 2030
Debt Instrument
Long-term debt, gross	125,000	125,000
Other
Debt Instrument
Long-term debt, gross	$ 2,619	$ 2,619

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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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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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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