Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Total	Common Shares	Paid in Capital	Retained Earnings (Deficit)
Balance at Dec. 31, 2013	$ 92,870,959	$ 218,328	$ 102,717,693	$ (10,065,062)
Balance, shares at Dec. 31, 2013		10,916,441
Shares issued for vested employees restricted stock units		$ 2,894	(2,894)
Shares issued for vested employees restricted stock units, shares		144,660
Shares issued for settlement of vested director restricted stock units		$ 811	(811)
Shares issued for settlement of vested director restricted stock units, shares	40,564	40,564
Shares issued for option exercises	$ 428,750	$ 1,098	427,652
Shares issued for option exercises, shares	56,362	54,906
Stock based compensation, net	$ 2,464,163		2,464,163
Dividends	$ (3,697,588)			(3,697,588)
Stock repurchases, shares	0
Net income	$ 4,047,122			4,047,122
Balance at Dec. 31, 2014	96,113,406	$ 223,131	105,605,803	(9,715,528)
Balance, shares at Dec. 31, 2014		11,156,571
Shares issued for vested employees restricted stock units		$ 1,297	(1,297)
Shares issued for vested employees restricted stock units, shares		64,834
Shares issued for option exercises	$ 284,250	$ 700	283,550
Shares issued for option exercises, shares	35,000	35,000
Stock based compensation, net	$ 1,303,708		1,303,708
Registration statement costs	(89,331)		(89,331)
Dividends	$ (6,337,568)			(6,337,568)
Stock repurchases, shares	0
Net income	$ 10,304,983			10,304,983
Balance at Dec. 31, 2015	101,579,448	$ 225,128	107,102,433	(5,748,113)
Balance, shares at Dec. 31, 2015		11,256,405
Shares issued for vested employees restricted stock units		$ 1,048	(1,048)
Shares issued for vested employees restricted stock units, shares		52,421
Shares issued for option exercises	$ 153,000	$ 350	152,650
Shares issued for option exercises, shares	17,500	17,500
Stock based compensation, net	$ 1,557,394		1,557,394
Dividends	(7,746,655)			(7,746,655)
Stock repurchases	$ (1,143,913)	$ (1,083)	(1,142,830)
Stock repurchases, shares	(54,176)	(54,176)
Net income	$ 2,780,642			2,780,642
Balance at Dec. 31, 2016	$ 97,179,916	$ 225,443	$ 107,668,599	$ (10,714,126)
Balance, shares at Dec. 31, 2016		11,272,150