Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2013	Jul. 01, 2012
Cash flows from operating activities:
Net (loss) income including noncontrolling interests	$ (26,847)	$ 74,192
Adjustments to reconcile net (loss) income to net cash from operating activities:
Depreciation and amortization	47,148	42,203
Loss on settlement of foreign currency forward contract	270	286
Equity in income of unconsolidated joint ventures	(2,495)	(2,369)
Distributions of earnings from unconsolidated joint ventures	2,868	2,812
Stock-based compensation	7,628	8,193
Excess tax benefits from stock-based compensation	(875)	(283)
Deferred income taxes	(27,005)	(3,896)
Provision for doubtful accounts	12,125	2,115
Fair value adjustments to contingent consideration	(8,662)	(1,959)
Gain on disposal of property and equipment	(142)	(157)
Lease termination costs and related asset impairment	6,463
Impairment of goodwill	56,600
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable	117,687	(34,037)
Prepaid expenses and other assets	7,435	27,561
Accounts payable	(43,911)	(2,584)
Accrued compensation	(12,458)	9,974
Billings in excess of costs on uncompleted contracts	(10,986)	6,032
Other liabilities	5,569	3,333
Income taxes receivable/payable	(15,144)	(3,215)
Net cash provided by operating activities	115,268	128,201
Cash flows from investing activities:
Capital expenditures	(20,533)	(14,906)
Payments for business acquisitions, net of cash acquired	(168,660)	(52,226)
Payment in settlement of foreign currency forward contract	(4,177)	(4,192)
Receipt in settlement of foreign currency forward contract	3,907	3,906
Investments in unconsolidated joint ventures		(586)
Changes in restricted cash	470
Proceeds from sale of property and equipment	1,763	701
Net cash used in investing activities	(187,230)	(67,303)
Cash flows from financing activities:
Payments on long-term debt	(167,185)	(60,222)
Proceeds from borrowings	296,389	52,849
Payments of debt issuance costs	(1,938)
Payments of earn-out liabilities	(24,015)	(18,055)
Excess tax benefits from stock-based compensation	875	283
Repurchases of common stock	(4,147)
Net proceeds from issuance of common stock	15,697	12,885
Net cash provided by (used in) financing activities	115,676	(12,260)
Effect of foreign exchange rate changes on cash	(2,227)	1,533
Net increase in cash and cash equivalents	41,487	50,171
Cash and cash equivalents at beginning of period	104,848	90,494
Cash and cash equivalents at end of period	146,335	140,665
Cash paid during the period for:
Interest	3,801	4,143
Income taxes, net of refunds received	$ 34,913	$ 45,670