Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2015	$ 108,586,107	$ 1,609,756	$ 8,577,051	$ 95,277,969	$ 8,035,711	$ (4,914,380)
Beginning balance, shares at Dec. 31, 2015			8,577,051
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations			$ 99,851	(99,851)
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations, shares			99,851
Stock-based compensation expense	195,787			195,787
Excess tax benefit from stock compensation	2,539			2,539
Exercise of common stock warrants	10,000		$ 1,000	9,000
Exercise of common stock warrants, shares			1,000
Net income	1,583,846				1,583,846
Other comprehensive income	480,525					480,525
Ending balance at Mar. 31, 2016	110,858,804	1,609,756	$ 8,677,902	95,385,444	9,619,557	(4,433,855)
Ending balance, shares at Mar. 31, 2016			8,677,902
Beginning balance at Dec. 31, 2016	139,207,396	878,049	$ 11,204,515	116,142,894	17,132,489	(6,150,551)
Beginning balance, shares at Dec. 31, 2016			11,204,515
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations	(188,914)		$ (2,054)	(186,860)
Issuance of restricted common stock, net of forfeitures and withholdings to satisfy employee tax obligations, shares			(2,054)
Stock-based compensation expense	235,597			235,597
Exercise of employee common stock options	$ 22,480		$ 9,367	13,113
Exercise of employee common stock options, shares	20,000		9,367
Exercise of common stock warrants	$ 65,000		$ 6,500	58,500
Exercise of common stock warrants, shares			6,500
Net income	332,058				332,058
Other comprehensive income	537,805					537,805
Ending balance at Mar. 31, 2017	$ 140,211,422	$ 878,049	$ 11,218,328	$ 116,263,244	$ 17,464,547	$ (5,612,746)
Ending balance, shares at Mar. 31, 2017			11,218,328