Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Income tax expense (benefit) on unrealized holding (loss) income arising during the period	$ 246,339	$ 638,094	$ 4,299,787	$ (13,782,319)
Income tax expense on reclassification adjustment for gains	$ 119,431	$ 118,715	$ 780,949	$ 1,000,861