Note 13 - Federal and State Income Taxes - The Change in Deferred Income Taxes (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Provision for income taxes		$ 6,292,477	$ (6,029,555)	$ (3,066,407)
Net deferred tax asset acquired				(3,310,553)
Net deferred tax asset resulting from market value adjustments of acquisitions		(52,717)	243,195	5,110,015
Re-measurement of deferred tax asset to incorporate newly enacted tax rates	$ (2,900,000)		2,918,606
Statement of stockholders' equity- Other comprehensive income (loss)		(1,000,164)	668,085	(202,691)
Total		$ 5,239,596	$ (2,199,669)	$ (1,469,636)