Financial Guarantee Liability - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026 USD ($) loan	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($) loan
Guarantor Obligations
Outstanding loan balances	$ 36,700,000		$ 36,200,000
Maximum loss potential	11,500,000		11,400,000
Provision (reversal) for expected credit losses	$ 1,460	$ 1,500	4,295
Delinquency threshold period	60 days
Delinquent
Guarantor Obligations
Outstanding loan balances	$ 5,100		5,100
Maximum loss potential	$ 1,700		1,700
Number of loans | loan	1
Advances for principal and interest	$ 1,000		1,000
Liquidation value of loans outstanding	$ 6,300		$ 6,300
Foreclosure
Guarantor Obligations
Number of loans | loan			1
Maximum | Fannie Mae DUS or Freddie TAH Loans
Guarantor Obligations
Percentage of contingent liability of actual losses incurred on outstanding loans	33.00%