CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Cash flows from operating activities
Net income	$ 18,454	$ 38,843
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	18,831	18,964
Stock-based compensation expense	26,598	20,118
Other	2,989	1,607
Deferred income taxes	74	441
Foreign currency transaction (gain) loss	(420)	2,300
Changes in operating assets and liabilities:
Accounts receivable, net	63,344	7,933
Inventories	106,245	86,814
Other assets	(9,690)	(5,433)
Accounts payable and accrued expenses	(191,070)	(111,227)
Accrued compensation	(14,443)	(6,205)
Deferred revenue	3,729	4,562
Other liabilities	10,727	6,388
Net cash provided by operating activities	35,368	65,105
Cash flows from investing activities
Purchases of property and equipment and intangible assets	(25,800)	(8,087)
Cash paid for acquisition, net of acquired cash	(36,289)	0
Net cash used in investing activities	(62,089)	(8,087)
Cash flows from financing activities
Repayments of borrowings	(3,333)	0
Payments for repurchase of common stock	(37,812)	(566)
Proceeds from exercise of common stock options	12,585	18,947
Payments of offering costs	0	(585)
Net cash provided by (used in) financing activities	(28,560)	17,796
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(107)	(475)
Net increase (decrease) in cash, cash equivalents and restricted cash	(55,388)	74,339
Cash, cash equivalents and restricted cash
Beginning of period	338,820	221,120
End of period	283,432	295,459
Supplemental disclosure
Cash paid for interest	851	1,244
Cash paid for taxes, net of refunds	1,025	1,941
Cash paid for amounts included in the measurement of lease liabilities	7,346
Supplemental disclosure of non-cash investing and financing activities
Purchases of property and equipment in accounts payable and accrued expenses	3,270	$ 2,426
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 75,642