Financial Guarantee Liability - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($)
Guarantor Obligations
Outstanding loan balances	$ 32,100,000	$ 29,100,000
Maximum loss potential	10,000,000	9,000,000
Provision (reversal) for expected credit losses	$ (1,891)	2,634	$ 1,700
Delinquency threshold period	60 days
Financial guarantee liability, settlement loss	$ 300	1,200
Financial guarantee liability, settlement loss, write off		600
Delinquent
Guarantor Obligations
Outstanding loan balances	5,100	7,300
Maximum loss potential	$ 1,700	2,400
Number of loans | loan	1
Advances for principal and interest	$ 2,100
Liquidation value of loans outstanding	6,100	7,500
Potential loss on liquidation of loan	$ 200	$ 500
Foreclosure
Guarantor Obligations
Number of loans | loan		1
Fannie Mae DUS or Freddie TAH Loans | Maximum
Guarantor Obligations
Percentage of contingent liability of actual losses incurred on outstanding loans	33.00%