Goodwill and Other Intangible Assets, net (Tables)

12 Months Ended

Aug. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

The gross changes in the carrying amount of goodwill by reporting segment for the years ended August 31, 2012 and 2011 were as follows (in thousands):

	MRB			APB			Total
Balance as of August 31, 2010	$	230,198		$	150,134		$	380,332
Acquisitions	232,341			11,583			243,924
Purchase accounting adjustments	1,086			(51		)	1,035
Foreign currency translation adjustment	1,021			1,493			2,514
Balance as of August 31, 2011	464,646			163,159			627,805
Acquisitions	1,454			—			1,454
Purchase price adjustments	1,540			—			1,540
Purchase accounting adjustments	5,361			541			5,902
Foreign currency translation adjustment	(1,047		)	(163		)	(1,210		)
Balance as of August 31, 2012	$	471,954		$	163,537		$	635,491

Schedule of Intangible Assets by Major Class [Table Text Block]

The following table presents the Company’s intangible assets as of August 31 (in thousands):

	2012					2011
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Covenants not to compete	$	25,041	$	(13,231	)	$	30,831	$	(15,254	)
Supply contracts	5,274		(4,274		)	5,274		(3,376		)
Other intangible assets subject to amortization(1)	3,231		(1,518		)	4,392		(2,216		)
Indefinite-lived intangibles(2)	1,255		—			1,255		—
Total	$	34,801	$	(19,023	)	$	41,752	$	(20,846	)

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(1) Other intangible assets subject to amortization include tradenames, marketing agreements, employment agreements, leasehold interests, permits and licenses and real property options.

(2) Indefinite-lived intangibles include tradenames, permits and licenses and real property options.

Schedule of Expected Amortization Expense [Table Text Block]

The estimated amortization expense, based on current intangible asset balances, during the next five fiscal years and thereafter is as follows (in thousands):

Years Ending August 31,	Estimated Amortization Expense
2013	$	4,326
2014	3,441
2015	1,950
2016	944
2017	444
Thereafter	3,418
Total	$	14,523