Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities:
Net income (loss)	$ 47,151,744	$ (32,760,340)	$ 7,116,100
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	5,573,074	6,609,632	6,109,869
Net investment (gains) losses	(21,984,617)	4,801,509	(5,705,255)
Equity in earnings of Donegal Financial Services Corporation	(295,000)	(2,693,962)	(1,621,605)
Changes in Assets and Liabilities:
Losses and loss expenses	55,008,625	137,993,497	70,007,137
Unearned premiums	3,618,879	3,072,065	37,401,313
Accrued expenses	3,011,598	(2,591,630)	(212,915)
Premiums receivable	(9,030,699)	3,704,182	(1,016,765)
Deferred policy acquisition costs	1,330,268	(325,267)	(3,980,664)
Deferred income taxes	649,928	(4,179,805)	11,889,970
Reinsurance receivable	(23,652,403)	(45,026,502)	(35,314,555)
Accrued investment income	(504,830)	(8,078)	(257,608)
Amounts due to affiliate	(805,369)	3,560,172	16,519,278
Reinsurance balances payable	(1,766,109)	(233,966)	(253,369)
Prepaid reinsurance premiums	(7,095,990)	(347,136)	(10,777,146)
Current income taxes	19,117,435	(8,097,499)	(9,826,855)
Other, net	6,033,243	299,262	(113,482)
Dividends received from Donegal Financial Services Corporation			1,036,750
Net adjustments	29,208,033	96,536,474	73,884,098
Net cash provided by operating activities	76,359,777	63,776,134	81,000,198
Purchases of fixed maturities:
Held to maturity	(96,724,391)	(48,969,776)	(51,049,152)
Available for sale	(165,989,508)	(116,961,667)	(138,675,907)
Purchases of equity securities	(20,722,416)	(11,303,361)	(17,033,093)
Sales of fixed maturities:
Available for sale	19,527,658	13,202,367	10,081,785
Maturity of fixed maturities:
Held to maturity	24,460,749	13,184,665	20,577,326
Available for sale	119,113,273	105,266,805	99,544,479
Sales of equity securities	40,465,748	13,779,330	20,880,814
Net purchases of property and equipment	(149,603)	(105,525)	(1,090,726)
Net sales (purchases) of short-term investments	2,718,538	(5,698,845)	(1,678,908)
Net cash used in investing activities	(43,377,179)	(37,606,007)	(58,443,382)
Cash Flows from Financing Activities:
Issuance of common stock	4,834,514	3,249,849	15,511,457
Cash dividends paid	(16,092,643)	(15,658,950)	(14,822,052)
Payments on lines of credit	(25,000,000)		(10,000,000)
Borrowings under lines of credit		1,000,000
Net cash used in financing activities	(36,258,129)	(11,409,101)	(9,310,595)
Net (decrease) increase in cash	(3,275,531)	14,761,026	13,246,221
Cash at beginning of year	52,594,461	37,833,435	24,587,214
Cash at end of year	49,318,930	52,594,461	37,833,435
Donegal Financial Services Corporation [Member]
Maturity of fixed maturities:
Sale of investment	$ 33,922,773

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