Note 15 - Income Taxes - Income Tax Provision (Benefit) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Current
Federal	$ 284,797	$ (109,214)
State	79,196	13,194
Deferred expense & change in valuation allowance	51,706	914,130
Net deferred tax asset revaluation adjustment		1,150,318
Provision (benefit) for income taxes	$ 415,699	$ 1,968,428