Consolidated Statements Of Changes In Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2013	$ 41,779	$ 17,270,615	$ 10,952,655	$ 28,265,049
Balance, shares at Dec. 31, 2013	4,177,951
Exercise of stock options	$ 20	13,120		13,140
Exercise of stock options, shares	2,000
Stock-based compensation		217,094		217,094
Tax (expense) benefit from exercise of stock-based awards		7,895		7,895
Issuance of restricted stock	$ 130	(130)
Issuance of restricted stock, shares	13,040
Shares issued under Employee Stock Purchase Plan	$ 84	80,755		80,839
Shares issued under Employee Stock Purchase Plan, shares	8,380
Net income			2,411,155	2,411,155
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
Dividend distribution			(1,055,374)	(1,055,374)
Tax (expense) benefit from exercise of stock-based awards		4,060		4,060
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	$ 42,383	$ 18,019,658	$ 15,035,458	$ 33,097,499
Balance, shares at Dec. 31, 2015	4,238,430