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Acquisition of Cedar Creek - Narrative (Details) - USD ($) shares in Thousands		3 Months Ended		9 Months Ended
	Apr. 13, 2018	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Dec. 29, 2018
Business Acquisition [Line Items]
Antidilutive securities excluded from diluted shares calculation (in shares)		114	0	0	100
Cedar Creek
Business Acquisition [Line Items]
Aggregate purchase price	$ 361,752,000
Transaction related costs		$ 1,800,000	$ 3,700,000	$ 8,400,000	$ 40,300,000
Note payable to shareholder	13,700,000
Subordinated debt	10,000,000
Interest payable	3,700,000
Revolving Credit Facility \| Line of Credit
Business Acquisition [Line Items]
Line of credit facility, maximum borrowing capacity		750,000,000		750,000,000
Long-term line of credit facility		354,800,000		354,800,000		$ 333,300,000
Revolving Credit Facility \| Line of Credit \| Cedar Creek
Business Acquisition [Line Items]
Line of credit facility, maximum borrowing capacity	$ 600,000,000.0
Term Loan \| Secured Debt
Business Acquisition [Line Items]
Long-term line of credit facility		$ 180,000,000.0		$ 180,000,000.0