Annual report pursuant to Section 13 and 15(d)

Composition of Certain Financial Statement Captions (Details 4)

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Composition of Certain Financial Statement Captions (Details 4) (USD $)
12 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Jan. 31, 2011
Property and Equipment      
Property and equipment gross $ 30,684,000 $ 22,080,000  
Less accumulated depreciation and amortization (12,926,000) (6,504,000)  
Property and equipment, net 17,758,000 15,576,000  
Depreciation and amortization 7,076,000 4,455,000 1,578,000
Software developed for internal use
     
Property and Equipment      
Property and equipment gross 1,095,000    
Less accumulated depreciation and amortization (144,000)    
Property and equipment, net 1,000,000    
Estimated useful lives 3 years    
Depreciation and amortization 144,000    
Servers, computers, and other related equipment
     
Property and Equipment      
Property and equipment gross 19,461,000 15,313,000  
Estimated useful lives 3 years    
Asset retirement   300,000  
Office furniture and equipment
     
Property and Equipment      
Property and equipment gross 1,722,000 1,411,000  
Construction in progress
     
Property and Equipment      
Property and equipment gross 2,264,000 234,000  
Leasehold improvements
     
Property and Equipment      
Property and equipment gross $ 6,142,000 $ 5,122,000  
Estimated useful lives 5 years