Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 01, 2012	Jan. 02, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income including noncontrolling interests	$ 22,703	$ 22,754
Adjustments to reconcile net income including noncontrolling interests to net cash from operating activities:
Depreciation and amortization	15,206	13,553
Equity in earnings of unconsolidated joint ventures	(969)	(948)
Distributions of earnings from unconsolidated joint ventures	1,079	886
Stock-based compensation	2,916	2,774
Excess tax benefits from stock-based compensation	(35)	(84)
Deferred income taxes	494	4,318
Provision for doubtful accounts	2,879	(1,092)
Exchange gain	(14)	(72)
Gain on disposal of property and equipment	(84)	(101)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(10,669)	37,994
Prepaid expenses and other assets	11,172	(10,375)
Accounts payable	(19,241)	(43,900)
Accrued compensation	(9,004)	(2,477)
Billings in excess of costs on uncompleted contracts	8,796	(7,929)
Other liabilities	9,650	(2,332)
Income taxes receivable/payable	3,434	(4,036)
Net cash provided by operating activities	38,313	8,933
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(4,593)	(4,236)
Payments for business acquisitions, net of cash acquired	(2,574)	(166,877)
Proceeds from sale of property and equipment	377	144
Net cash used in investing activities	(6,790)	(170,969)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt	(11,012)	(2,154)
Proceeds from borrowings	546	21,867
Payments of earn-out liabilities	(9,368)
Net change overdrafts	(738)
Distributions paid to noncontrolling interests		(501)
Excess tax benefits from stock-based compensation	35	84
Net proceeds from issuance of common stock	2,990	3,270
Net cash (used in) provided by financing activities	(17,547)	22,566
EFFECT OF EXCHANGE RATE CHANGES ON CASH	1,250	83
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	15,226	(139,387)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	90,494	220,933
CASH AND CASH EQUIVALENTS AT END OF PERIOD	105,720	81,546
Cash paid during the period for:
Interest	1,107	585
Income taxes, net of refunds received	$ 8,772	$ 8,809