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Accrued and Other Liabilities - Schedule of Accrued Payroll and Related Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
Feb. 28, 2013
Aug. 31, 2012
Accrued Liabilities And Other Non Current Liabilities [Line Items]    
Accrued bonuses $ 3,391 $ 1,034
Accrued payroll 2,634 1,802
Accrued profit sharing 639 1,714
Accrued payroll taxes 1,026 892
Other 423 462
Total $ 8,113 $ 5,904