Note 16 - Income Taxes (Details Textual) - USD ($)	3 Months Ended
	Sep. 30, 2019	Dec. 31, 2019
Gain (Loss) on Disposition of Property Plant Equipment, Total	$ 4,800,000
Deferred Tax Assets, Property, Plant and Equipment	$ 864,000
Deferred Tax Assets, Goodwill and Intangible Assets		$ 4,800,000