Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Supplemental Cash Flow Elements [Abstract]
Operating leases	$ 41,812
Finance leases	86
Cash paid for amounts included in the measurement of lease liabilities	41,898
Non-cash Investing Activities:
Property, equipment and intangibles purchased in accounts payable	7,657	$ 8,331
Property, equipment and intangibles purchased for debt	29,813	13,617
Customer accounts receivable converted to notes receivable	538	110
Cash Financing Activities:
Proceeds from issuance of new debt, net of discount	124,375	38,823
Borrowings on long-term debt	6,282	142,999
Payments of long-term debt	(104,954)	(30,648)
Payments of debt issuance and extinguishment costs, including underwriting fees	(635)	(72)
Change in long-term debt	25,068	151,102
Cash paid for amounts included in the measurement of finance lease liabilities	597
Non-cash Financing Activities:
Prepaid insurance funded through short-term debt borrowings	4,948	2,757
Prepaid ERP costs funded through short-term debt borrowings	1,430	0
Shares surrendered for tax obligations for employee share-based transactions in accrued liabilities	79	379
Shares repurchased and cash not yet distributed to shareholders	0	749
Accounts payable converted to installment notes	757	10,134
Other Supplemental Cash Flow Information:
Cash taxes paid, net of refunds	21,026	37,489
Cash interest paid	$ 38,832	$ 40,833