Condensed Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 14,153	$ 17,051
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,108	5,828
Amortization of Intangible Assets	1,181	1,636
Deferred income taxes	(275)	(527)
Stock-based compensation	4,994	4,022
Excess tax benefit from stock-based compensation arrangements	0	(1,681)
Other non-cash (income) expense	522	1,151
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable	19,452	9,161
Inventories	2,113	2,671
Prepaid expenses and other assets	(4,281)	(7,321)
Other assets	(666)	(497)
Accounts payable	(445)	(4,715)
Income taxes payable/receivable	(410)	(8,210)
Other current liabilities	4,056	(3,110)
Other long-term liabilities	821	676
Net cash provided by operating activities	47,323	16,135
Cash flows from investing activities:
Purchases of property and equipment	(3,901)	(8,139)
Proceeds from dispositions of property and equipment	0	26
Purchases of available-for-sale securities	(63,630)	(12,593)
Proceeds from sales and maturities of available-for-sale securities	128,526	30,188
Acquisition of businesses, net of cash acquired	(67,289)	0
Net cash used in investing activities	(6,294)	9,482
Cash flows from financing activities:
Short-term borrowings	0	4,786
Repayments of short-term borrowing	0	(4,786)
Net change in capital lease obligations	(4)	(4)
Issuance of common stock under employee stock option and purchase plans	4,712	4,568
Cash dividend paid on common stock	(24,040)	0
Repurchase of common stock	0	(20,665)
Net settlement of restricted common stock	(4,046)	(4,413)
Excess tax benefits from stock-based compensation arrangements	0	1,681
Net cash provided by (used in) financing activities	(23,378)	(18,833)
Effect of exchange rate changes on cash and cash equivalents	2,584	(6,183)
Net increase (decrease) in cash and cash equivalents	20,235	601
Cash and cash equivalents, beginning of period	67,761	167,061
Cash and cash equivalents, end of period	87,996	167,662
Cash paid during the period for:
Interest	12	3
Income taxes	6,150	25,818
Cash received during the period for:
Income taxes	405	9,662
Non-cash investing and financing activities:
Unpaid property and equipment	$ 1,000	$ 1,933