Note 12 - Income Taxes - Components of Income Tax Expense (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current
Federal	$ 756,984	$ 834,327
State	336,191	383,242
Current Income Tax Expense (Benefit), Total	1,093,175	1,217,569
Deferred	(53,841)	(111,360)
Income Tax Expense (Benefit), Total	$ 1,039,334	$ 1,106,209