Financial Guarantee Liability - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025 USD ($) loan	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) loan	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($)
Guarantor Obligations
Outstanding loan balances	$ 33,500,000		$ 33,500,000		$ 32,100,000
Maximum loss potential	10,500,000		10,500,000		10,000,000
Provision (reversal) for expected credit losses	2,000	$ 100	$ 3,475	$ 1,400	(1,891)
Delinquency threshold period			60 days
Financial guarantee liability, settlement loss						$ 300
Delinquent
Guarantor Obligations
Outstanding loan balances	5,100		$ 5,100		5,100
Maximum loss potential	$ 1,700		$ 1,700		1,700
Number of loans | loan	1		1
Advances for principal and interest	$ 1,500		$ 1,500		2,100
Liquidation value of loans outstanding	$ 3,500		3,500		6,100
Potential loss on liquidation of loan			$ 1,000		$ 200
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%