Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details)

v3.23.2
Fair Value Measurements - Narrative (Details)
$ in Thousands, £ in Millions
 9 Months Ended
Jun. 30, 2023
USD ($)
segment
Jun. 30, 2023
GBP (£)
segment
Mar. 06, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2022
GBP (£)
Oct. 31, 2021
USD ($)
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]            
Receivable due from sale of business     $ 6,800      
Sale of small practice, term for collecting payments 3 years          
Fair Value, Recurring            
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]            
Contingent consideration $ 12,700          
Fair Value, Recurring | Interest Rate Swap            
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]            
Number of instruments | segment 3 3        
Aidvantage            
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]            
Contingent consideration $ 10,200     $ 13,800    
BZ Bodies Limited            
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]            
Contingent consideration $ 2,500 £ 2.0   $ 2,500 £ 2.0  
Maximum | Navient            
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]            
Contingent consideration           $ 65,000