Consolidated Statements of Income and Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements of Income and Comprehensive Income [Abstract]
Net premiums earned - affiliated reinsurance	$ 142,608,940	$ 130,555,613	$ 134,823,098
Net losses and loss expenses - affiliated reinsurance	81,219,926	87,950,502	81,539,930
Income tax (benefit) on unrealized holding gain (loss) arising during the period	4,833,143	12,237,669	(1,976,358)
Income tax (benefit) on reclassification adjustment for gains	$ 2,332,209	$ 4,175,631	$ 1,494,545