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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2013
Aug. 31, 2012
Income Taxes [Abstract]    
Accrued payroll and related expenses $ 1,367 $ 886
Account receivable 675 702
Reserves and accruals 2,584 2,676
Stock-based compensation expense 2,023 2,121
Uniform capitalization 1,623 1,156
Tax credit carryforwards 1,631 1,240
Other 1,584 1,604
Total gross deferred tax assets 11,487 10,385
Valuation allowance (1,842) (1,302)
Total deferred tax assets 9,645 9,083
Property and equipment, net (1,023) (1,163)
Amortization of tax goodwill and intangible assets (25,331) (24,708)
Investments in partnerships (1,506) (1,471)
Other (124) (197)
Total deferred tax liabilities (27,984) (27,539)
Net deferred tax liabilities $ (18,339) $ (18,456)