Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jan. 02, 2016	Dec. 27, 2014
Cash flows from operating activities:
Net income	$ 20,286	$ 17,430
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,385	6,210
Amortization of intangible assets	2,092	2,180
Deferred income taxes	(3,492)	6,988
Stock-based compensation	3,745	4,390
Other non-cash (income) expense	165	360
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable	(3,646)	2,760
Inventories	(3,713)	4,715
Prepaid expenses and other assets	(3,551)	(8,650)
Other assets	(1,047)	(658)
Accounts payable	(4,252)	(5,358)
Income taxes payable/receivable	4,575	(7,277)
Other current liabilities	(5,128)	7,145
Other long-term liabilities	1,843	816
Net cash provided by operating activities	14,262	31,051
Cash flows from investing activities:
Purchases of property and equipment	(4,765)	(5,138)
Proceeds from dispositions of property and equipment	50	568
Purchases of available-for-sale securities	(50,151)	(43,780)
Proceeds from sales and maturities of available-for-sale securities	51,254	77,370
Net cash used in investing activities	(3,612)	29,020
Cash flows from financing activities:
Short-term borrowings	17,160	11,542
Repayments of short-term borrowings	(12,160)	(11,542)
Issuance of common stock under employee stock option and purchase plans	3,521	3,437
Repurchase of common stock	0	(17,298)
Net settlement of restricted common stock	(5,317)	(5,200)
Net cash provided by (used in) financing activities	3,204	(19,061)
Effect of exchange rate changes on cash and cash equivalents	(2,118)	(2,807)
Net increase (decrease) in cash and cash equivalents	11,736	38,203
Cash and cash equivalents, beginning of period	130,607	91,217
Cash and cash equivalents, end of period	142,343	129,420
Non-cash investing and financing activities:
Unpaid property and equipment purchases	$ 1,499	$ 807