Reinsurance - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Effects Of Reinsurance [Line Items]
Ceded premium written	$ 4,480,000	$ 3,735,000	$ 8,513,000	$ 7,629,000
Ceded premiums earned	$ 4,201,000	$ 3,733,000	$ 8,237,000	7,596,000
Minimum
Effects Of Reinsurance [Line Items]
Reinsurance retention policy, reinsured percentage			40.00%
Maximum
Effects Of Reinsurance [Line Items]
Reinsurance retention policy, reinsured percentage			60.00%
Maximum | Homeowners Lines
Effects Of Reinsurance [Line Items]
Amount retained (excess of)			$ 300,000	300,000
Property Risk | Maximum
Effects Of Reinsurance [Line Items]
Amount retained (excess of)			400,000	300,000
Liability Risk | Maximum
Effects Of Reinsurance [Line Items]
Amount retained (excess of)			$ 400,000	$ 400,000