Consolidated Statements Of Changes In Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2014	$ 42,013	$ 17,589,349	$ 13,363,810	$ 30,995,172
Balance, shares at Dec. 31, 2014	4,201,371
Exercise of stock options	$ 123	42,530		42,653
Exercise of stock options, shares	12,250
Stock-based compensation		284,628		284,628
Tax (expense) benefit from exercise of stock-based awards		4,060		4,060
Dividend distribution	$ 0	0	(1,055,374)	(1,055,374)
Issuance of restricted stock	$ 139	2,365		2,504
Issuance of restricted stock, shares	13,940
Shares issued under Employee Stock Purchase Plan	$ 109	96,726		96,835
Shares issued under Employee Stock Purchase Plan, shares	10,869
Net income			2,727,022	2,727,022
Balance at Dec. 31, 2015	$ 42,384	18,019,658	15,035,458	33,097,499
Balance, shares at Dec. 31, 2015	4,238,430
Exercise of stock options	$ 76	53,623		53,699
Exercise of stock options, shares	2,000
Stock-based compensation		314,088		314,088
Tax (expense) benefit from exercise of stock-based awards		(79,991)		(79,991)
Dividend distribution			(1,504,213)	(1,504,213)
401 (K) stock match	$ 346	371,219		371,565
401 (K) stock match, shares	34,613
Issuance of restricted stock	$ 333	(353)		(20)
Issuance of restricted stock, shares	38,825
Shares issued under Employee Stock Purchase Plan	$ 113	101,826		101,939
Shares issued under Employee Stock Purchase Plan, shares	11,286
Net income			4,195,980	4,195,980
Balance at Dec. 31, 2016	$ 43,252	$ 18,780,070	$ 17,727,225	$ 36,550,547
Balance, shares at Dec. 31, 2016	4,325,154