Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Oct. 03, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including noncontrolling interests	$ 104,732	$ 92,982	$ 76,819
Adjustments to reconcile net income including noncontrolling interests to net cash from operating activities:
Depreciation and amortization	56,902	55,684	33,491
Loss on settlement of foreign currency forward contract	286	293	28
Equity in earnings of unconsolidated joint ventures	(2,916)	(4,877)	(1,184)
Distributions of earnings from unconsolidated joint ventures	3,194	4,802	1,689
Stock-based compensation	10,839	10,582	10,178
Excess tax benefits from stock-based compensation	(624)	(104)	(754)
Deferred income taxes	(5,512)	1,720	11,641
Provision for doubtful accounts	4,768	3,733	7,179
Impairment of goodwill	914
Fair value adjustments to contingent consideration	(19,246)	(1,755)	(265)
Fair value adjustment to assets held for sale	3,437
Foreign exchange (gain) loss	(139)	1,288	(205)
Lease termination costs	1,261	1,281
Loss (gain) on disposal of property and equipment	191	(231)	(1,480)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(39,960)	2,046	(23,161)
Prepaid expenses and other assets	26,284	(28,324)	5,770
Accounts payable	(14,529)	(34,013)	(10,002)
Accrued compensation	15,678	11,157	4,582
Billings in excess of costs on uncompleted contracts	2,425	(1,669)	(19,957)
Other liabilities	7,371	6,475	9,855
Income taxes receivable/payable	2,665	10,553	2,618
Net cash provided by operating activities	158,021	131,623	106,842
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(25,106)	(18,901)	(21,584)
Payments for business acquisitions, net of cash acquired	(55,014)	(269,996)	(78,905)
Payment in settlement of foreign currency forward contract	(4,192)	(4,216)	(3,960)
Receipt in settlement of foreign currency forward contract	3,906	3,923	3,932
Change in restricted cash		(5,000)
Investments in unconsolidated joint ventures	(430)	(530)
Proceeds from sale of property and equipment	1,037	879	3,128
Net cash used in investing activities	(79,799)	(293,841)	(97,389)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt	(120,792)	(43,047)	(2,673)
Proceeds from borrowings	52,672	67,618	120,000
Payments of earn-out liabilities	(18,055)
Distributions paid to noncontrolling interests	(9)	(1,702)
Excess tax benefits from stock-based compensation	624	104	754
Net proceeds from issuance of common stock	18,166	8,378	3,353
Net cash (used in) provided by financing activities	(67,394)	31,351	121,434
EFFECT OF EXCHANGE RATE CHANGES ON CASH	3,526	428	861
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	14,354	(130,439)	131,748
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	90,494	220,933	89,185
CASH AND CASH EQUIVALENTS AT END OF YEAR	104,848	90,494	220,933
Cash paid during the year for:
Interest	5,279	4,226	1,287
Income taxes, net of refunds received	$ 58,126	$ 33,715	$ 32,407