Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2013	Dec. 30, 2012
Cash flows from operating activities:
Net income including noncontrolling interests	$ 27,327	$ 26,396
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	15,914	12,595
Equity in earnings of unconsolidated joint ventures	(650)	(649)
Distributions of earnings from unconsolidated joint ventures	364	947
Stock-based compensation	2,339	2,534
Excess tax benefits from stock-based compensation	(213)	(390)
Deferred income taxes	557	5,624
Provision for doubtful accounts	3,069	2,538
Fair value adjustments to contingent consideration	(4,630)	10
Foreign exchange (gain) loss	(91)	189
Loss on disposal of property and equipment	1,035	90
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable	19,237	25,513
Prepaid expenses and other assets	(3,928)	78
Accounts payable	(6,186)	(23,564)
Accrued compensation	(13,646)	(24,215)
Billings in excess of costs on uncompleted contracts	12,671	3,544
Other liabilities	(7,790)	(124)
Income taxes receivable/payable	(3,660)	(13,360)
Net cash provided by operating activities	41,719	17,756
Cash flows from investing activities:
Capital expenditures	(6,602)	(4,274)
Payments for business acquisitions, net of cash acquired	(10,678)	(14,505)
Payment received on note for sale of operation	3,900
Proceeds from sale of property and equipment	1,926	292
Net cash used in investing activities	(11,454)	(18,487)
Cash flows from financing activities:
Payments on long-term debt	(233)	(22,551)
Proceeds from borrowings		89,234
Payments of earn-out liabilities	(1,589)	(22,372)
Net change in overdrafts	(915)	122
Excess tax benefits from stock-based compensation	213	390
Net proceeds from issuance of common stock	6,327	3,089
Net cash provided by financing activities	3,803	47,912
Effect of foreign exchange rate changes on cash	(2,577)	(425)
Net increase in cash and cash equivalents	31,491	46,756
Cash and cash equivalents at beginning of period	129,305	104,848
Cash and cash equivalents at end of period	160,796	151,604
Cash paid during the period for:
Interest	2,251	532
Income taxes, net of refunds received	$ 16,158	$ 21,220