Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Total
Balance at Dec. 31, 2016	$ 11,971,657	$ (13,870,041)	$ 8,493,256	$ (2,336,201)	$ 41,861,675	$ 46,120,346
Balance (shares) at Dec. 31, 2016	3,324,955
Net income					4,052,479	4,052,479
Total other comprehensive income (loss)				702,202		702,202
Stock compensation expense			684,351			684,351
Distribution to shareholders					(1,447,077)	(1,447,077)
Issuance of common stock	$ 122,756		526,466			$ 649,222
Issuance of common stock (shares)	49,106					109,098
Cash settlement of stock options			(823,530)			$ (823,530)
Balance at Dec. 31, 2017	$ 12,094,413	(13,870,041)	8,880,543	(1,633,999)	44,467,077	49,937,993
Balance (shares) at Dec. 31, 2017	3,374,061
Net income					4,598,350	4,598,350
Total other comprehensive income (loss)				(423,986)		(423,986)
Stock compensation expense			869,055			869,055
Distribution to shareholders					(1,515,777)	$ (1,515,777)
Issuance of common stock (shares)						75,500
Cash settlement of stock options			(768,075)			$ (768,075)
Purchase of treasury stock		(365,149)				$ (365,149)
Purchase of treasury stock (shares)	(23,228)					(23,228)
Balance at Dec. 31, 2018	$ 12,094,413	$ (14,235,190)	$ 8,981,523	$ (2,057,985)	$ 47,549,650	$ 52,332,411
Balance (shares) at Dec. 31, 2018	3,350,833