Commitments and Contingencies - Years In Which Commitments are Expected to be Paid (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Other Commitments [Line Items]
Commitments to contribute capital to small business investment companies and CRA-related loan pools	$ 85,229
2022
Other Commitments [Line Items]
Commitments to contribute capital to small business investment companies and CRA-related loan pools	40,974
2023
Other Commitments [Line Items]
Commitments to contribute capital to small business investment companies and CRA-related loan pools	$ 44,255