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Transactions with Affiliates, Insurance Subsidiaries Ceded to Donegal Mutual Pursuant to Reinsurance Agreements (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Reinsurance Pooling and Other Reinsurance Arrangements [Abstract]      
Premiums earned $ 383,059,075 $ 399,284,886 $ 356,669,937
Insurance Subsidiaries [Member]      
Reinsurance Pooling and Other Reinsurance Arrangements [Abstract]      
Coverage under catastrophic occurrence 5,000,000    
Premiums earned 346,111,400 361,300,053 321,311,172
Donegal Mutual [Member]      
Reinsurance Pooling and Other Reinsurance Arrangements [Abstract]      
Coverage under catastrophic occurrence 2,000,000    
Premiums earned 17,989,939 37,996,474 39,315,398
Losses and loss expenses 5,194,974 20,037,608 15,471,037
Liability for losses and loss expenses 22,642,908 36,659,853 35,306,627
Catastrophe Reinsurance [Member] | Insurance Subsidiaries [Member]      
Reinsurance Pooling and Other Reinsurance Arrangements [Abstract]      
Premiums earned 13,800,018 17,574,161 15,595,138
Losses and loss expenses 10,517,709 9,309,624 25,259,527
Liability for losses and loss expenses $ 1,271,006 $ 1,658,057 $ 3,812,339