Reinsurance - Quota Share Agreement Terms (Details)	12 Months Ended
	Dec. 31, 2021
2015 QSR
Effects of Reinsurance [Line Items]
Quota Share %	15.00%
Annual Loss Ratio to Exhaust Profit Commission	68.00%
2017 QSR (2)
Effects of Reinsurance [Line Items]
Quota Share %	30.00%
Annual Loss Ratio to Exhaust Profit Commission	60.00%
2018 QSR (2)
Effects of Reinsurance [Line Items]
Quota Share %	30.00%
Annual Loss Ratio to Exhaust Profit Commission	62.00%
2019 QSR
Effects of Reinsurance [Line Items]
Quota Share %	30.00%
Annual Loss Ratio to Exhaust Profit Commission	62.00%
Cede rate, option 1	25.00%
Cede rate, option 2	20.00%
2020 QSR
Effects of Reinsurance [Line Items]
Quota Share %	12.50%
Annual Loss Ratio to Exhaust Profit Commission	62.00%
Cede rate, option 1	10.50%
Cede rate, option 2	8.00%
2020 QSR, Two Year
Effects of Reinsurance [Line Items]
Quota Share %	17.50%
Annual Loss Ratio to Exhaust Profit Commission	62.00%
Cede rate, option 1	14.50%
Cede rate, option 2	12.00%
2021 QSR
Effects of Reinsurance [Line Items]
Quota Share %	12.50%
Annual Loss Ratio to Exhaust Profit Commission	57.50%
Cede rate, option 1	10.50%
Cede rate, option 2	8.00%
2022 QSR
Effects of Reinsurance [Line Items]
Quota Share %	15.00%
Annual Loss Ratio to Exhaust Profit Commission	57.50%
Cede rate, option 1	12.50%
Cede rate, option 2	10.00%
Credit Union QSR
Effects of Reinsurance [Line Items]
Quota Share %	65.00%
Annual Loss Ratio to Exhaust Profit Commission	50.00%