Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Oct. 02, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Unamortized discount on term loan B and debt issuance costs	$ (8,241)	$ (10,702)
Total debt	839,107	814,772
Current portion of long-term debt	(37,500)	(37,500)
Total long-term debt	801,607	777,272
Secured Debt \| Loans Payable \| Term Loan A (TLA) Facility
Debt Instrument [Line Items]
Long-term debt, gross	239,062	267,188
Secured Debt \| Loans Payable \| Term Loan B (TLB) Facility
Debt Instrument [Line Items]
Long-term debt, gross	558,286	558,286
Secured Debt \| Revolving Credit Facility \| New Revolving Credit Facility 2015
Debt Instrument [Line Items]
Long-term debt, gross	$ 50,000	$ 0

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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