Note 10 - Long-term Debt - Long-term Debt (Details) - USD ($)	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Long-term debt, total		$ 10,802,757	$ 11,944,549
Less: Current portion of long-term debt	$ (5,585,637)		(316,906)
Long-term debt, noncurrent	10,292,484		11,627,643
Pacific Western Bank Note, A&R LSA [Member]
Long-term debt, total	15,878,121		10,802,355
CSC Build-to-Suit Equipment Financing [Member]
Long-term debt, total			$ 1,142,194