Loans Receivable and Allowance for Credit Losses - Schedule of Total Exposure (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Receivable from Grain
Microloans originated - put back to Grain (inception-to-March 31, 2024)	$ 24,051
Write-downs, net of recoveries (inception-to-date as of September 30, 2023)	(15,406)
Cash receipts from Grain (inception-to-March 31, 2024)	(6,819)
Grant/reserve (inception-to-March 31, 2024)	(1,826)
Microloan receivables from Grain borrowers
Grain originated loans receivable as of March 31, 2024	5,731
Allowance for credit losses as of March 31, 2024	(4,868)	[1]
Microloans, net of allowance for credit losses as of March 31, 2024	863
Investments
Investment in Grain	1,000
Investment in Grain write-off	(1,000)
Total exposure to Grain as of March 31, 2024	$ 863	[2]

[1] Excludes $1.6 million of security deposits by Grain originated borrowers reported in deposits in the accompanying Consolidated Statements of Financial Conditions.

[2] Total remaining exposure to Grain borrowers. These loans are now serviced by the Bank.