Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Dec. 27, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 209,794	$ 167,518	$ (72,914)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	421,371	399,247	411,549
Gain on disposal of property and equipment, net	(6,265)	(2,010)	(7,688)
Loss on extinguishment of debt	53,632
Tangible asset impairment charges	125	6,293	1,580
Amortization of deferred financing costs	7,252	13,261	18,014
Amortization of Senior Notes original issue premium	(1,664)	(3,330)	(3,330)
Insurance proceeds related to operating activities	10,499	23,243	10,000
Insurance benefit in net income	(10,499)	(20,083)
Deferred tax (benefit) provision	(80,434)	17,606	35,803
Share-based compensation expense	18,355	15,832	11,736
Provision for doubtful accounts	11,112	12,103	18,559
Changes in operating assets and liabilities, net of business acquisitions:
Decrease (increase) in receivables	21,555	9,600	(47,347)
(Increase) decrease in inventories	(100,579)	(55,047)	105,256
Decrease (increase) in prepaid expenses and other assets	6,199	(20,716)	1,016
Increase (decrease) in accounts payable and bank checks outstanding	131,044	(71,448)	(35,649)
Increase (decrease) in accrued expenses and other liabilities	(135,855)	63,699	(34,395)
Net cash (used in) provided by operating activities	555,642	555,768	402,190
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of businesses—net of cash	(122,294)	(69,481)
Proceeds from sales of property and equipment	16,827	5,048	25,054
Purchases of property and equipment	(164,395)	(187,409)	(147,094)
Investment in Avero, LLC	(7,658)
Investment in marketable securities	(484,624)
Insurance proceeds related to investing activities		2,771	4,000
Purchase of industrial revenue bonds		(22,139)
Net cash used in investing activities	(762,144)	(271,210)	(118,040)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from debt refinancing	2,213,803
Proceeds from other borrowings	2,706,535	22,139	898,450
Principal payments on debt and capital leases	(4,140,760)	(109,489)	(1,016,033)
Payment for debt financing costs and fees	(25,941)	(3,573)	(421)
Redemption of Old Senior Notes	(1,376,927)
Net proceeds from initial public offering	1,113,799
Cash distribution to shareholders	(666,332)
Contingent consideration paid for business acquisition			(1,800)
Proceeds from employee share purchase plan	3,354
Proceeds from common stock sales	2,850	500	197
Common stock and share-based awards settled	(10,591)	(19,992)	(628)
Net cash (used in) provided by financing activities	(180,210)	(110,415)	(120,235)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(386,712)	174,143	163,915
CASH AND CASH EQUIVALENTS—Beginning of year	517,802	343,659	179,744
CASH AND CASH EQUIVALENTS—End of year	131,090	517,802	343,659
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest (net of amounts capitalized)	222,742	345,732	278,474
Income taxes paid (refunded)—net	4,571	7,861	(30)
NON-CASH INVESTING AND FINANCING ACTIVITIES
Property and equipment purchases included in accounts payable	50,349	26,885	26,620
Capital lease additions	80,118	$ 110,097	$ 96,756
Contingent consideration payable for acquisition of businesses	8,375
Marketable securities transferred in connection with the legal defeasance of the CMBS Fixed Loan Facility	484,624
CMBS Fixed Loan Facility defeasance	471,615
Restricted cash transferred to Cash and cash equivalents	$ 6,147