v3.22.4
Investments (Tables)
3 Months Ended
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
Schedule of Held-to-Maturity Investments
The amortized cost, gross unrealized gains or losses, and fair value of investments classified as held-to-maturity at September 30, 2022 were as follows:
September 30, 2022
Gross UnrealizedEstimated Fair
Due in less than 1 year:Amortized CostGainsLossesMarket Value
   Corporate and municipal bonds$28,918 $— $(19)$28,899