Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including noncontrolling interests	$ 45,024	$ 40,835
Adjustments to reconcile net income including noncontrolling interests to net cash from operating activities:
Depreciation and amortization	29,071	27,376
Loss on settlement of foreign currency forward contract	286	293
Equity in earnings of unconsolidated joint ventures	(1,553)	(2,428)
Distributions of earnings from unconsolidated joint ventures	1,595	2,503
Stock-based compensation	5,648	5,314
Excess tax benefits from stock-based compensation	(147)	(90)
Deferred income taxes	(2,533)	(4,445)
Provision for doubtful accounts	3,721	1,354
Exchange gain	(137)	(328)
Gain on disposal of property and equipment	(69)	(148)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	11,038	42,848
Prepaid expenses and other assets	11,234	(10,043)
Accounts payable	(23,392)	(60,729)
Accrued compensation	(13,777)	96
Billings in excess of costs on uncompleted contracts	(1,156)	(10,931)
Other liabilities	10,714	2,791
Income taxes receivable/payable	(4,178)	8,372
Net cash provided by operating activities	71,389	42,640
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(7,983)	(9,476)
Payments for business acquisitions, net of cash acquired	(2,831)	(188,031)
Payment in settlement of foreign currency forward contract	(4,192)	(4,216)
Receipt in settlement of foreign currency forward contract	3,906	3,923
Proceeds from sale of property and equipment	497	340
Net cash used in investing activities	(10,603)	(197,460)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt	(51,837)	(2,403)
Proceeds from borrowings	13,025	21,867
Payments of earn-out liabilities	(18,055)
Distributions paid to noncontrolling interests		(501)
Excess tax benefits from stock-based compensation	147	90
Net proceeds from issuance of common stock	8,882	5,373
Net cash (used in) provided by financing activities	(47,838)	24,426
EFFECT OF EXCHANGE RATE CHANGES ON CASH	2,585	402
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	15,533	(129,992)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	90,494	220,933
CASH AND CASH EQUIVALENTS AT END OF PERIOD	106,027	90,941
Cash paid during the period for:
Interest	2,839	1,998
Income taxes, net of refunds received	$ 30,974	$ 14,856