Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

v2.4.0.6
Acquisitions (Details) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2012
RMO [Member]
Jan. 31, 2012
Vigilan [Member]
Jul. 31, 2012
Developed product technologies [Member]
RMO [Member]
Jan. 31, 2012
Developed product technologies [Member]
Vigilan [Member]
Jul. 31, 2012
Customer relationships [Member]
RMO [Member]
Jan. 31, 2012
Customer relationships [Member]
Vigilan [Member]
Business Acquisition [Line Items]            
Intangible assets     $ 2,260 $ 1,430 $ 2,320 $ 1,150
Goodwill 4,238 2,454        
Net deferred taxes (1,628)          
Net other assets (363) (34)        
Total purchase price, net cash acquired $ 6,827 $ 5,000