Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheet Detail (Details 1)

v2.4.0.6
Consolidated Balance Sheet Detail (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Property, Plant and Equipment, Gross $ 78,255 $ 81,370
Less - Accumulated depreciation and amortization (58,493) (61,208)
Property and equipment, net 19,762 20,162
Buildings [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 20 Years  
Property, Plant and Equipment, Gross 11,426 11,426
Office furniture and equipment [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 5 Years  
Property, Plant and Equipment, Gross 3,379 3,153
Computer equipment, software and demonstration equipment [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 3 Years  
Property, Plant and Equipment, Gross 45,787 48,507
Deployed assets [Member]
   
Property, Plant and Equipment, Gross 3,280 3,280
Deployed assets [Member] | Minimum [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 2 Years  
Deployed assets [Member] | Maximum [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 7 Years  
Service and spare components [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 5 Years  
Property, Plant and Equipment, Gross 8,368 9,003
Leasehold improvements [Member]
   
Property, Plant and Equipment, Gross 1,661 2,644
Leasehold improvements [Member] | Minimum [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 1 Years  
Leasehold improvements [Member] | Maximum [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 7 Years  
Automobiles and trucks [Member]
   
Property, Plant and Equipment, Estimated Useful Lives 5 Years  
Property, Plant and Equipment, Gross 211 211
Land [Member]
   
Property, Plant and Equipment, Gross 2,780 2,780
Assets not yet placed in service [Member]
   
Property, Plant and Equipment, Gross $ 1,363 $ 366