v3.7.0.1
Property and Equipment, Net - Summary of Property and Equipment (Detail) - USD ($)
$ in Thousands
Apr. 30, 2017
Jan. 31, 2017
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 652,826 $ 596,638
Less accumulated depreciation and amortization (248,724) (230,761)
Property and equipment, net 404,102 365,877 [1]
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 6,592 6,592
Buildings    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 144,657 115,302
Computers, equipment and software    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 344,875 323,311
Computers, equipment and software acquired under capital leases    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 16,830 18,298
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 26,552 24,462
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 113,320 108,673
Construction in Progress Related to Owned Real Estate Projects    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 120,000 $ 115,000
[1] See Note 2 for a summary of adjustments.