CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 5,247,063	$ 4,884,288	$ 4,398,820
Other comprehensive income (loss):
Unrealized gain (loss) on securities arising during the period	(2,158,236)	26,255	768,326
Reclassification adjustment for securities gains realized in net income	(380,904)	(423,832)	(312,577)
Other comprehensive income (loss), before tax	(2,539,140)	(397,577)	455,749
Income tax effect related to items of other comprehensive income (loss)	939,482	147,104	(168,627)
Other comprehensive income (loss), after tax	(1,599,658)	(250,473)	287,122
Total comprehensive income	$ 3,647,405	$ 4,633,815	$ 4,685,942