Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 28, 2014	Jun. 29, 2013
Cash flows from operating activities:
Net income	$ 40,009	$ 45,840
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	20,006	19,386
Amortization of intangible assets	7,281	7,313
Deferred income taxes	(3,115)	(225)
Stock-based compensation	14,207	14,276
Other non-cash (income) expense	(376)	483
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable	5,749	(6,981)
Inventories	(10,262)	(76)
Prepaid expenses and other assets	(11,898)	(9,936)
Other assets	(2,714)	(535)
Accounts payable	(3,855)	10,487
Income taxes payable/receivable	(13,808)	(23,800)
Other current liabilities	19,944	8,902
Other long-term liabilities	3,729	1,625
Net cash provided by operating activities	64,897	66,759
Cash flows from investing activities:
Purchases of property and equipment	(17,862)	(15,366)
Proceeds from dispositions of property and equipment	417	131
Purchases of available-for-sale securities	(161,180)	(170,306)
Proceeds from sales and maturities of available-for-sale securities	147,285	206,652
Acquisition of businesses, net of cash acquired	0	(67,289)
Net cash used in investing activities	(31,340)	(46,178)
Cash flows from financing activities:
Short-term borrowings	45,927	9,540
Repayments of short-term borrowing	(45,091)	(9,540)
Capital lease repayments	(2)	(13)
Issuance of common stock under employee stock option and purchase plans	10,513	15,708
Cash dividend paid on common stock	0	(24,040)
Net settlement of restricted common stock	(7,793)	(4,163)
Net cash provided by/(used in) financing activities	3,554	(12,508)
Effect of exchange rate changes on cash and cash equivalents	2,013	5,477
Net increase (decrease) in cash and cash equivalents	39,124	13,550
Cash and cash equivalents, beginning of period	110,444	67,761
Cash and cash equivalents, end of period	$ 149,568	$ 81,311