Transactions With Affiliates (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of reinsurance Atlantic States assumed from the pool
Premiums earned	$ 258,064,301	$ 242,186,814	$ 144,554,336
Atlantic States assumed [Member] | Affiliated Entity [Member]
Schedule of reinsurance Atlantic States assumed from the pool
Premiums earned	298,803,060	266,687,610	238,308,846
Losses and loss expenses	187,415,893	206,907,170	160,256,348
Unearned premiums	157,140,642	141,880,039	125,322,884
Liability for losses and loss expenses	$ 162,863,045	$ 156,941,512	$ 134,580,026