XML 61 R43.htm IDEA: XBRL DOCUMENT v3.21.2
Summary of Significant Accounting Policies - PP&E (Details)
12 Months Ended
Sep. 30, 2021
Computers and purchased software | Minimum  
Property and Equipment  
Estimated useful life 1 year
Computers and purchased software | Maximum  
Property and Equipment  
Estimated useful life 5 years
Office/operational equipment | Minimum  
Property and Equipment  
Estimated useful life 3 years
Office/operational equipment | Maximum  
Property and Equipment  
Estimated useful life 5 years
Furniture and fixtures | Minimum  
Property and Equipment  
Estimated useful life 5 years
Furniture and fixtures | Maximum  
Property and Equipment  
Estimated useful life 7 years
Internally developed software for internal-use  
Property and Equipment  
Estimated useful life 5 years
Building  
Property and Equipment  
Estimated useful life 39 years
Vehicles  
Property and Equipment  
Estimated useful life 5 years