Reinsurance, Unaffiliated Reinsurers (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) InsuranceCoverage	Nov. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Unaffiliated Reinsurance [Abstract]
Loss reinsurance agreement contracts retention amount	$ 2,000,000.0
Number of reinsurance coverages | InsuranceCoverage	31
Return from estimated surplus		$ 3,000,000,000.0
Receivable from reinsurance claims	$ 18,112,800		$ 0
Percentage of reinsurer coverage	20.00%
Third Party Reinsurance [Member]
Unaffiliated Reinsurance [Abstract]
Percentage of accumulation of losses	100.00%
Catastrophe reinsurance, set retention amount	$ 15,000,000.0
Maximum amount of loss coverage under reinsurance agreement of property catastrophe	$ 185,000,000.0
Donegal Mutual [Member]
Unaffiliated Reinsurance [Abstract]
Percentage of accumulation of losses	100.00%
Catastrophe reinsurance, set retention amount	$ 2,000,000.0
Maximum amount of loss coverage under reinsurance agreement of property catastrophe	13,000,000.0
Additional coverage amount	$ 5,000,000.0