Common Shares Outstanding (Detail)	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2010
Schedule Of Common Stock [Line Items]
Balance, beginning of year	13,243,385	13,189,581	13,157,387
Series B preferred stock converted to common shares	1,000,000
Issuance of restricted stock, net	37,333	53,804	32,194
Balance, end of year	14,280,718	13,243,385	13,189,581