Consolidated Statements of Income and Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements of Income and Comprehensive Income [Abstract]
Net premiums earned - affiliated reinsurance	$ 130,555,613	$ 134,823,098	$ 128,747,699
Net losses and loss expenses - affiliated reinsurance	87,950,502	81,539,930	68,712,989
Income tax (benefit) on unrealized holding gain (loss) arising during the period	12,237,669	(1,976,358)	8,680,941
Income tax (benefit) on reclassification adjustment for gains	$ 4,175,631	$ 1,494,545	$ 1,523,050