Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Other Comprehensive Income Realized Gain on Investment Securities, tax	$ 222,025	$ (49,240)
Other Comprehensive Income Unrealized Gain (Loss) on Available-for-Sale Investment Securities, tax	$ 210,652	$ 144,200	$ 433,000