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Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Unamortized discount on term loan B and debt issuance costs	$ (5,468)	$ (6,715)
Total debt	687,130	731,258
Current portion of long-term debt	(37,500)	(37,500)
Total long-term debt	649,630	693,758
Secured Debt | Loans Payable | Senior secured term loan A
Debt Instrument [Line Items]
Long-term debt, gross	220,312	229,687
Secured Debt | Loans Payable | Senior secured term loan B
Debt Instrument [Line Items]
Long-term debt, gross	$ 472,286	$ 508,286

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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 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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