Note 8 - Commitments and Contingencies - Balance Sheet Information Related to Right-of-use Assets and Liabilities (Details) - USD ($)	Mar. 31, 2022	Jan. 01, 2022	Dec. 31, 2021
Operating Lease, Right-of-Use Asset	$ 275,984	$ 304,079	$ 0
Current portion of operating lease liabilities	116,128		0
Noncurrent portion of operating lease liabilities	160,640		0
Total operating lease liabilities	276,768
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total	2,964,182	2,607,618
Current portion of finance lease liabilities	669,309		118,420
Noncurrent portion of finance lease liabilities	2,694,369		$ 264,347
Total finance lease liabilities	$ 3,363,678	$ 2,607,618