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Income Taxes (Significant Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($)
$ in Thousands
Aug. 31, 2017
Aug. 31, 2016
Income Taxes [Abstract]    
Net operating loss carryforward $ 10,310  
Sale and financing of corporate headquarters 8,420 $ 9,013
Foreign income tax credit carryforward 4,382 2,784
Stock-based compensation 2,954 2,674
Inventory and bad debt reserves 1,643 1,147
Bonus and other accruals 1,574 1,017
Deferred revenue 510 405
Other 337 617
Total deferred income tax assets 30,130 17,657
Less: valuation allowance (612) (301)
Net deferred income tax assets 29,518 17,356
Intangible step-ups - indefinite lived (8,539) (8,528)
Intangible step-ups - definite lived (7,607) (6,003)
Intangible asset impairment and amortization (4,875) (4,505)
Property and equipment depreciation (4,960) (3,367)
Deferred commissions (2,195)  
Unremitted earnings of foreign subsidiaries (492) (574)
Other (236) (399)
Total deferred income tax liabilities (28,904) (23,376)
Net deferred income tax liability $ 614  
Net deferred income tax liability   $ (6,020)