Reinsurance - Excess of Loss Reinsurance (Details) - USD ($) $ in Thousands						12 Months Ended
	Aug. 03, 2021	Feb. 02, 2021	Oct. 29, 2020	May 25, 2019	Oct. 30, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Home Re 2021-2
Effects of Reinsurance [Line Items]
Debt issued to cover insurance, term	12 years 6 months
Initial First Layer Retention	$ 190,159
Remaining First Layer Retention						$ 190,159
Remaining Excess of Loss Reinsurance Coverage	$ 398,429					398,429
Home Re 2021-1
Effects of Reinsurance [Line Items]
Debt issued to cover insurance, term		12 years 6 months
Initial First Layer Retention		$ 211,159
Remaining First Layer Retention						211,142
Remaining Excess of Loss Reinsurance Coverage		$ 398,848				387,830
Home Re 2020-1
Effects of Reinsurance [Line Items]
Debt issued to cover insurance, term			10 years
Initial First Layer Retention			$ 275,283
Remaining First Layer Retention						275,204	$ 275,283
Remaining Excess of Loss Reinsurance Coverage			$ 412,917			234,312	412,917
Home Re 2019-1
Effects of Reinsurance [Line Items]
Debt issued to cover insurance, term				10 years
Initial First Layer Retention				$ 185,730
Remaining First Layer Retention						183,917	184,514	$ 185,636
Remaining Excess of Loss Reinsurance Coverage				$ 315,739		208,146	208,146	271,021
Home Re 2018-1
Effects of Reinsurance [Line Items]
Debt issued to cover insurance, term					10 years
Initial First Layer Retention					$ 168,691
Remaining First Layer Retention						165,365	166,005	167,779
Remaining Excess of Loss Reinsurance Coverage					$ 318,636	$ 218,343	$ 218,343	$ 260,957