Unpaid Losses and Loss Adjustment Expenses - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Liability For Claims And Claims Adjustment Expense [Line Items]
Losses and loss adjustment expenses, net	$ 18,018,000	$ 19,362,000
Prior year adjustments	5,521,000	5,778,000
2017 Accident Year
Liability For Claims And Claims Adjustment Expense [Line Items]
Prior year adjustments	1,500,000
2018 Accident Year
Liability For Claims And Claims Adjustment Expense [Line Items]
Prior year adjustments	1,300,000
2019 Accident Year
Liability For Claims And Claims Adjustment Expense [Line Items]
Prior year adjustments	1,300,000
2020 Accident Year
Liability For Claims And Claims Adjustment Expense [Line Items]
Prior year adjustments	1,500,000
Commercial Lines1
Liability For Claims And Claims Adjustment Expense [Line Items]
Prior year adjustments	5,700,000	5,200,000
Personal Lines
Liability For Claims And Claims Adjustment Expense [Line Items]
Prior year adjustments	$ 219,000	612,000
Hospitality Lines
Liability For Claims And Claims Adjustment Expense [Line Items]
Prior year adjustments		2,700,000
Small Business Lines
Liability For Claims And Claims Adjustment Expense [Line Items]
Prior year adjustments		$ 2,500,000