Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheet Detail - Property and Equipment, Net (Detail)

v2.4.0.8
Consolidated Balance Sheet Detail - Property and Equipment, Net (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 35,728 $ 34,077
Less-Accumulated depreciation (17,198) (15,678)
Total property and equipment, net 18,530 18,399
Land [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 2,880 2,780
Buildings [Member]
    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (Years) 20  
Property, Plant and Equipment, Gross 12,081 11,426
Office Furniture and Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (Years) 5  
Property, Plant and Equipment, Gross 998 1,073
Computer Equipment, Software and Demonstration Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (Years) 3  
Property, Plant and Equipment, Gross 17,466 16,458
Service and Spare Components [Member]
    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (Years) 5  
Property, Plant and Equipment, Gross 1,158 1,251
Leasehold Improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 1,145 $ 1,089
Leasehold Improvements [Member] | Minimum [Member]
    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (Years) 1  
Leasehold Improvements [Member] | Maximum [Member]
    
Property, Plant and Equipment [Line Items]    
Estimated Useful Life (Years) 7