Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning Balance at Dec. 31, 2017	$ 49,937,993	$ 12,094,413	$ (13,870,041)	$ 8,880,543	$ (1,633,999)	$ 44,467,077
Beginning Balance, shares at Dec. 31, 2017		3,374,061
Net income	4,598,350					4,598,350
Other comprehensive income (loss)	(423,986)				(423,986)
Stock compensation expense	869,055			869,055
Distribution to shareholders	(1,515,777)					(1,515,777)
Cash settlement of stock options	(768,075)			(768,075)
Purchase of treasury stock	(365,149)		(365,149)
Purchase of treasury stock (shares)		(23,228)
Ending Balance at Dec. 31, 2018	52,332,411	$ 12,094,413	(14,235,190)	8,981,523	(2,057,985)	47,549,650
Ending Balance, shares at Dec. 31, 2018		3,350,833
Net income	5,513,608					5,513,608
Other comprehensive income (loss)	189,129				189,129
Adoption of ASU 2018-02					(119,014)	119,014
Stock compensation expense	968,467			968,467
Distribution to shareholders	(1,610,852)					(1,610,852)
Cash settlement of stock options	$ (1,687,782)			(1,687,782)
Purchase of treasury stock (shares)	0
Ending Balance at Dec. 31, 2019	$ 55,704,981	$ 12,094,413	$ (14,235,190)	$ 8,262,208	$ (1,987,870)	$ 51,571,420
Ending Balance, shares at Dec. 31, 2019		3,350,833