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Supporting Financial Information - Debt Obligations (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Bank term loan $ 28,500 $ 46,750
Less: unamortized deferred financing costs (1,717) (2,114)
Long-term portion of bank debt obligations, net of deferred financing costs $ 26,783 $ 44,636