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Fair Value Measurements (Tables)
12 Months Ended
Sep. 30, 2023
Fair Value Disclosures [Abstract]  
Schedule of Changes in Level 3 Financial Instruments Measured on a Recurring Basis The following tables present the changes in the Company's Level 3 financial instruments that are measured at fair value on a recurring basis.
Accrued Contingent Consideration
Balance at September 30, 2021$36,229 
Contingent consideration accrued at time of business combination6,281 
Change in fair value of contingent consideration included in Operating expenses23,725 
Contingent consideration paid(43,402)
Balance at September 30, 2022$22,833 
Contingent consideration accrued at time of business combination760 
Change in fair value of contingent consideration included in Operating expenses10,781 
Contingent consideration paid(26,135)
Balance at September 30, 2023$8,239