Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 1,575	$ (234,573)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization of fixed and intangible assets	32,002	23,548
Impairment charges on goodwill	0	210,633
Impairment charges on intangible assets	8,174	59,405
Impairment charges on fixed assets	9,591	5,872
Loss on sale of FDC Vitamins, LLC	203	0
Amortization of deferred financing fees	485	678
Gain on extinguishment of debt	(16,229)	0
Amortization of debt discount on convertible notes	2,570	3,569
Deferred income taxes	14,478	(33,727)
Deferred rent	(2,835)	(1,903)
Equity compensation expense	1,740	4,137
Tax benefits on exercises of equity awards	743	895
Changes in operating assets and liabilities:
Accounts receivable	(1,458)	4,445
Inventories	33,925	1,759
Prepaid expenses and other current assets	(1,143)	(6,056)
Other long-term assets	(35)	50
Accounts payable	(3,994)	(287)
Accrued expenses and other current liabilities	(2,147)	3,589
Other long-term liabilities	(46)	939
Net cash provided by operating activities	77,599	42,973
Cash flows from investing activities:
Capital expenditures	(24,655)	(43,314)
Net proceeds on sale of FDC Vitamins, LLC	14,847	0
Trademarks and other intangible assets	(250)	(313)
Net cash used in investing activities	(10,058)	(43,627)
Cash flows from financing activities:
Borrowings under revolving credit facility	125,000	90,000
Repayments of borrowings under revolving credit facility	(137,000)	(89,000)
Purchases of convertible notes	(57,158)	0
Bank overdraft	1,881	(1,841)
Proceeds from exercises of common stock options	0	1,511
Issuance of shares under employee stock purchase plan	194	270
Purchases of treasury stock	(275)	(565)
Other financing activities	(339)	(681)
Net cash used in financing activities	(67,697)	(306)
Effect of exchange rate changes on cash and cash equivalents	1	31
Net decrease in cash and cash equivalents	(155)	(929)
Cash and cash equivalents beginning of period	1,947	2,833
Cash and cash equivalents end of period	1,792	1,904
Supplemental disclosures of cash flow information:
Interest paid	2,219	2,110
Income taxes (refunded) paid	(10,729)	6,550
Supplemental disclosures of non-cash investing activities:
Liability for purchases of property and equipment	1,829	8,577
Assets acquired under capital leases	0	891
Assets acquired under tenant incentives	$ 0	$ 2,986