Loss Reserves - Default Inventory Reconciliation (Details) - loan	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Primary Default Inventory [Roll Forward]
Beginning delinquent inventory	26,387	33,290	57,710
New Notices	46,825	42,988	42,432
Cures	(46,108)	(48,262)	(64,896)
Paid claims	(1,328)	(1,305)	(1,223)
Rescissions and denials	(45)	(35)	(38)
Other items removed from inventory	(81)	(289)	(695)
Ending delinquent inventory	25,650	26,387	33,290