Consolidated Statements of Income - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Net premiums earned	$ 150,457,785	$ 136,589,156	$ 296,987,601	$ 270,137,417
Investment income, net of investment expenses	5,157,396	4,614,484	10,106,349	9,230,260
Net realized investment gains	390,461	2,034,172	1,436,982	1,945,640
Lease income	189,652	213,792	389,725	426,582
Installment payment fees	1,480,133	1,681,699	3,000,458	3,323,249
Equity in earnings of Donegal Financial Services Corporation	341,527	348,625	868,287	757,867
Total revenues	158,016,954	145,481,928	312,789,402	285,821,015
Expenses:
Net losses and loss expenses	97,839,291	97,887,449	193,778,603	195,519,841
Amortization of deferred policy acquisition costs	24,826,000	22,025,000	48,836,000	43,344,000
Other underwriting expenses	25,203,442	21,546,607	49,036,506	42,005,326
Policyholder dividends	687,872	607,247	1,605,709	1,001,750
Interest	390,077	443,135	720,615	808,617
Other expenses	676,921	652,578	1,403,313	1,614,785
Total expenses	149,623,603	143,162,016	295,380,746	284,294,319
Income before income tax expense	8,393,351	2,319,912	17,408,656	1,526,696
Income tax expense	1,928,324	381,242	4,089,293	222,440
Net income	$ 6,465,027	$ 1,938,670	$ 13,319,363	$ 1,304,256
Class A Common Stock [Member]
Earnings per common share:
Common stock - basic	$ 0.24	$ 0.08	$ 0.50	$ 0.05
Common stock - diluted	0.24	0.07	0.49	0.05
Class B Common Stock [Member]
Earnings per common share:
Common stock - basic	0.21	0.07	0.45	0.04
Common stock - diluted	0.21	0.07	0.45	0.04
Common stock - basic and diluted	$ 0.21	$ 0.07	$ 0.45	$ 0.04