Annual report pursuant to Section 13 and 15(d)

Income taxes (Detail) - Deferred tax assets and liabilities

v2.4.0.6
Income taxes (Detail) - Deferred tax assets and liabilities (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2012
Jul. 31, 2011
Deferred tax assets:    
Federal tax carryforward losses $ 29,531 $ 25,504
Provision for uncollectible accounts receivable 1,263 1,340
State and local tax carry forward losses 2,914 2,419
Accrued royalties 143 143
Stock compensation 450 1,218
Depreciation 445  
Research and development and other tax credit carryforwards 795 633
Foreign tax carryforward losses 108 381
Intangibles 2,903  
Inventory 1,630 1,515
Accrued expenses 909 736
Other, net 15 23
Deferred tax assets 41,106 33,912
Deferred tax liabilities:    
Deferred patent costs (139) (170)
Intangibles   (2,983)
Depreciation   (27)
Prepaid expenses (613) (691)
Other, net (31) (55)
Deferred tax liabilities (783) (3,926)
Net deferred tax assets (liabilities) before valuation allowance 40,323 29,986
Less: valuation allowance (41,261) (32,920)
Net deferred tax liabilities $ (938) $ (2,934)