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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Operating activities:
Net income	$ 62,438	$ 90,019
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	37,402	33,543
Amortization of deferred financing costs and debt discount	6,614	6,876
Goodwill impairment	3,665	0
Share-based compensation expense	48,680	14,927
Deferred tax provision (benefit)	5,302	(5,631)
Allowance for doubtful accounts	(77)	(140)
Reserve for inventory obsolescence	11,978	6,898
Foreign currency exchange rate loss	847	1,793
Changes in cash due to:
Receivables	(5,602)	944
Inventories	(16,470)	(6,064)
Prepaid expenses	7,115	33,299
Accounts payable	2,966	1,337
Accrued liabilities	(31,321)	(17,812)
Deferred revenue	(12,836)	5,535
Other long term assets and liabilities, net	4,895	(1,114)
Income taxes	1,828	(12,729)
Cash provided by operating activities	127,424	151,681
Investing activities:
Capital expenditures	(20,469)	(10,479)
Capitalized software expenditures	(22,189)	(24,082)
Other items, net	(5,094)	244
Cash used for investing activities	(47,752)	(34,317)
Financing activities:
Net (payments) borrowings on revolver	0	0
Payments on long-term debt	(57,750)	(107,750)
Taxes paid related to net share settlement of equity awards	(4,953)	(4,796)
Proceeds from stock options exercised	2,364	475
Other items, net	(623)	(350)
Cash used for financing activities	(60,962)	(112,421)
Effect of exchange rate changes on cash and cash equivalents	2,951	(2,755)
Net increase in cash and cash equivalents	21,661	2,188
Cash and cash equivalents, beginning of period	182,736	236,974
Cash and cash equivalents, end of period	$ 204,397	$ 239,162

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