Annual report pursuant to Section 13 and 15(d)

Goodwill and intangible assets (Detail) - Intangible assets

v2.4.0.6
Goodwill and intangible assets (Detail) - Intangible assets (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2012
Jul. 31, 2011
Finite-lived intangible assets, Gross $ 27,904 $ 34,838
Finite-lived intangible assets, Accumulated Amortization (16,124) (14,853)
Finite-lived intangible assets, Net 11,780 19,985
Patents [Member]
   
Finite-lived intangible assets, Gross 11,027 11,027
Finite-lived intangible assets, Accumulated Amortization (10,439) (10,278)
Finite-lived intangible assets, Net 588 749
Customer Relationships [Member]
   
Finite-lived intangible assets, Gross 12,304 12,789
Finite-lived intangible assets, Accumulated Amortization (4,356) (3,472)
Finite-lived intangible assets, Net 7,948 9,317
Website And Acquired Content [Member]
   
Finite-lived intangible assets, Gross 1,019 1,063
Finite-lived intangible assets, Accumulated Amortization (874) (748)
Finite-lived intangible assets, Net 145 315
Licensed Technology And Other [Member]
   
Finite-lived intangible assets, Gross 485 649
Finite-lived intangible assets, Accumulated Amortization (300) (355)
Finite-lived intangible assets, Net 185 294
Trademarks [Member]
   
Finite-lived intangible assets, Gross 3,069 9,310
Finite-lived intangible assets, Accumulated Amortization (155)  
Finite-lived intangible assets, Net $ 2,914 $ 9,310