Reinsurance - Excess of Loss Reinsurance (Details) - USD ($) $ in Thousands					6 Months Ended	12 Months Ended
	Feb. 02, 2021	Oct. 29, 2020	May 25, 2019	Oct. 30, 2018	Jun. 30, 2021	Dec. 31, 2020	Aug. 03, 2021
Home Re 2021-1
Effects of Reinsurance [Line Items]
Remaining First Layer Retention	$ 211,159				$ 211,159
Remaining Excess of Loss Reinsurance Coverage	$ 398,848				398,848
Home Re 2020-1
Effects of Reinsurance [Line Items]
Remaining First Layer Retention		$ 275,283			275,268	$ 275,283
Remaining Excess of Loss Reinsurance Coverage		$ 412,917			352,099	412,917
Home Re 2019-1
Effects of Reinsurance [Line Items]
Remaining First Layer Retention			$ 185,730		184,278	184,514
Remaining Excess of Loss Reinsurance Coverage			$ 315,739		208,146	208,146
Home Re 2018-1
Effects of Reinsurance [Line Items]
Remaining First Layer Retention				$ 168,691	165,538	166,005
Remaining Excess of Loss Reinsurance Coverage				$ 318,636	$ 218,343	$ 218,343
Home Re 2021-2 | Subsequent Event
Effects of Reinsurance [Line Items]
Remaining Excess of Loss Reinsurance Coverage							$ 398,400