Product Warranty Costs (Tables)

6 Months Ended

Feb. 29, 2012

Product Warranty Costs [Abstract]

Rollforward Of Accrued Product Warranty Reserve

	Six Months Ended
	February 29, 2012			February 28, 2011
Beginning balance	$	23,707		$	7,868
Purchase accounting adjustments		(7,726	)		—
Warranty reserves of acquired business		43			10,870
Provision for warranties		5,393			4,802
Warranty payments and costs incurred		(5,640	)		(2,450	)
Impact of changes in foreign currency rates		(1,109	)		652
Ending balance	$	14,668		$	21,742