Segments Geographic Information (Details) $ in Millions	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
CALIFORNIA
Revenue, Major Customer [Line Items]
Premiums In Force	$ 258.4	$ 262.0	$ 329.8
Policies In force	40,704	39,610	43,079
FLORIDA
Revenue, Major Customer [Line Items]
Premiums In Force	$ 41.1	$ 37.9	$ 36.3
Policies In force	7,989	6,898	5,822
NEW YORK
Revenue, Major Customer [Line Items]
Premiums In Force	$ 24.5	$ 26.7	$ 31.7
Policies In force	7,307	6,657	5,679
All Other States
Revenue, Major Customer [Line Items]
Premiums In Force	$ 247.4	$ 251.3	$ 266.8
Policies In force	55,350	50,341	44,104
UNITED STATES
Revenue, Major Customer [Line Items]
Premiums In Force	$ 571.4	$ 577.9	$ 664.6
Policies In force	111,350	103,506	98,684