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Long-Term Debt Debt Balances (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020	Jan. 03, 2021
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period	5.10%	4.40%	4.70%	4.50%
Total obligations under capital leases	$ 3,306		$ 3,306		$ 908
Long-term Debt	523,307		523,307		494,158
Less: current portion	(5,031)		(5,031)		(5,525)
Less: deferred financing costs	(6,766)		(6,766)		(7,777)
Debt Instrument, Unamortized Discount	(611)		(611)		(5,161)
Long-term debt, net of current portion	510,899		510,899		475,695
Term Loan B Facility [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	172,938		172,938		419,375
Term Loan B-1 Facility [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	0		0		73,875
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	47,063		47,063		0
Senior Unsecured Notes Due 2029
Debt Instrument [Line Items]
Long-term Debt	$ 300,000		$ 300,000		$ 0