Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies (Details)

v3.22.2.2
Significant Accounting Policies (Details)
12 Months Ended
Sep. 30, 2022
business
Property, Plant and Equipment [Line Items]  
Number of businesses acquired 3
Operating lease, weighted average discount rate, percent 3.50%
Unrecognized compensation costs, period for recognition 4 years
Revenue Benchmark | Customer Concentration Risk | United States Federal Government  
Property, Plant and Equipment [Line Items]  
Concentration risk 47.00%
Restricted Stock Units | Share-based Payment Arrangement, Tranche One  
Property, Plant and Equipment [Line Items]  
Vesting period 1 year
Restricted Stock Units | Share-based Payment Arrangement, Tranche Two  
Property, Plant and Equipment [Line Items]  
Vesting period 5 years
Performance Stock Units  
Property, Plant and Equipment [Line Items]  
Vesting period 3 years
Unrecognized compensation costs, period for recognition 3 years
Maximum | Restricted Stock Units  
Property, Plant and Equipment [Line Items]  
Vesting period 5 years
Minimum | Restricted Stock Units  
Property, Plant and Equipment [Line Items]  
Vesting period 3 years
Office Space | Maximum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 39 years
Office furniture | Maximum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 7 years
Software and Software Development Costs | Maximum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 8 years
Software and Software Development Costs | Minimum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 3 years