Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 332,058	$ 1,583,846
Unrealized gains on securities available for sale:
Unrealized holding gains arising during the period	574,536	2,138,520
Reclassification adjustment for (gains) losses included in net income	6,229	(38,961)
Tax effect	(222,375)	(803,921)
Net of tax	358,390	1,295,638
Unrealized losses on securities transferred to held to maturity:
Reclassification adjustment for losses included in net income	41,720	41,720
Tax effect	(15,975)	(15,975)
Net of tax	25,745	25,745
Unrealized gains (losses) on cash flow hedges:
Unrealized holding losses arising during the period	(747)	(1,502,087)
Reclassification adjustment for losses included in net income	154,131	86,080
Tax effect	286	575,149
Net of tax	153,670	(840,858)
Other comprehensive income	537,805	480,525
Comprehensive income	$ 869,863	$ 2,064,371