Consolidated Statements of Income (Loss) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Net premiums earned	$ 188,763,313	$ 185,714,110	$ 376,836,555	$ 367,478,690
Investment income, net of investment expenses	7,289,652	6,342,152	14,338,155	12,720,521
Net investment gains (losses)	1,566,157	1,517,310	19,663,270	598,971
Lease income	112,155	122,403	223,254	245,996
Installment payment fees	1,057,677	1,306,197	2,146,594	2,654,158
Equity in earnings of Donegal Financial Services Corporation	0	787,856	295,000	1,419,970
Total revenues	198,788,954	195,790,028	413,502,828	385,118,306
Expenses:
Net losses and loss expenses	131,507,280	135,753,645	254,617,936	292,336,913
Amortization of deferred policy acquisition costs	30,925,000	30,579,000	61,517,000	60,244,000
Other underwriting expenses	28,208,336	28,492,434	58,893,219	57,815,072
Policyholder dividends	1,969,490	1,213,588	4,319,138	2,515,771
Interest	303,423	566,284	868,715	1,030,432
Other expenses, net	337,894	518,123	904,265	1,044,335
Total expenses	193,251,423	197,123,074	381,120,273	414,986,523
Income (loss) before income tax expense (benefit)	5,537,531	(1,333,046)	32,382,555	(29,868,217)
Income tax expense (benefit)	749,077	(543,191)	4,570,937	(10,900,284)
Net income (loss)	$ 4,788,454	$ (789,855)	$ 27,811,618	$ (18,967,933)
Class A Common Stock [Member]
Earnings (loss) per common share:
Common stock—basic	$ 0.17	$ (0.03)	$ 1.00	$ (0.68)
Common stock—diluted	0.17	(0.03)	0.99	(0.68)
Common stock—basic and diluted	0.17	(0.03)
Class B Common Stock [Member]
Earnings (loss) per common share:
Common stock—basic	0.15	(0.03)	0.90	(0.63)
Common stock—diluted	0.15	(0.03)	0.90	(0.63)
Common stock—basic and diluted	$ 0.15	$ (0.03)	$ 0.90	$ (0.63)