Transactions with Affiliates, Reinsurance Ceded to Donegal Mutual Pursuant to Quota-Share Reinsurance Agreements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reinsurance Pooling and Other Reinsurance Arrangements [Abstract]
Premiums and losses related to certain products	66.20%	70.30%	74.00%
Premiums earned	$ 388,073,427	$ 383,059,075	$ 399,284,886
Prepaid reinsurance premiums	$ 168,724,465	160,591,399
Donegal Mutual [Member]
Reinsurance Pooling and Other Reinsurance Arrangements [Abstract]
Premiums and losses related to business of MICO	25.00%
Premiums and losses related to certain products	100.00%
Premiums earned	$ 168,243	17,989,939	37,996,474
Losses and loss expenses	2,902,422	5,194,974	20,037,608
Prepaid reinsurance premiums	0	0	18,548,821
Liability for losses and loss expenses	$ 17,852,153	$ 22,642,908	$ 36,659,853