Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 27,686,787	$ 16,927,881	$ 14,952,537
Unrealized gains on securities available for sale:
Unrealized holding gains arising during the period before tax	4,258,154	1,144,314	19,697,118
Less reclassification adjustment for gains included in net income before tax	4,592,398	798,983	92,363
	(334,244)	345,331	19,604,755
Unrealized losses on interest rate cap derivatives:
Unrealized holding losses arising during the period before tax	(279,497)	(631,363)	(584,264)
Less reclassification adjustment for ineffectiveness and caplet amortization before tax	(75,290)	(15,895)	30,147
	(204,207)	(615,468)	(614,411)
Other comprehensive income (loss), before tax	(538,451)	(270,137)	18,990,344
Tax expense (benefit)	(202,691)	(81,524)	7,281,574
Other comprehensive income (loss), net of tax	(335,760)	(188,613)	11,708,770
Comprehensive income	$ 27,351,027	$ 16,739,268	$ 26,661,307