Note 19 - New Accounting Pronouncements (Details Textual) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Jan. 01, 2019
Operating Lease, Right-of-Use Asset	$ 8,469,661	$ 9,052,941		$ 9,655,304
Operating Lease, Liability, Total	$ 8,560,892	$ 9,105,503		9,655,304
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset			$ 9,655,304	481,130
Operating Lease, Liability, Total			$ 9,655,304	$ 481,130