Transactions With Affiliates (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Southern and Le Mars assumed from Donegal Mutual pursuant to the quota-share reinsurance agreements
Premiums earned	$ 324,219,993	$ 287,919,197	$ 253,189,916
Southern And Le Mars [Member]
Schedule of Southern and Le Mars assumed from Donegal Mutual pursuant to the quota-share reinsurance agreements
Premiums earned	22,189,399	17,757,409	14,516,901
Losses and loss expenses	19,620,587	14,983,405	12,600,094
Unearned premiums	9,926,381	10,225,922	8,124,069
Liability for losses and loss expenses	$ 8,873,592	$ 7,770,053	$ 7,316,879