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Computer Equipment, Software, Leasehold Improvements, and Furniture, Net
 3 Months Ended
Apr. 30, 2022
Property, Plant and Equipment [Abstract]  
Computer Equipment, Software, Leasehold Improvements, and Furniture, Net Computer Equipment, Software, Leasehold Improvements, and Furniture, Net
Computer equipment, software, leasehold improvements, and furniture and equipment and the related accumulated depreciation were as follows: 
April 30, 2022January 31, 2022
Computer hardware, at cost$138 $137 
Computer software, at cost55 55 
Leasehold improvements, land and buildings, at cost356 351 
Furniture and equipment, at cost93 93 
642 636 
Less: Accumulated depreciation(480)(474)
Computer hardware, software, leasehold improvements, and furniture and equipment, net
$162 $162