Note 2 - Revenue Recognition - Schedule of Assets and Liabilities for Contracts with Customers (Details) - USD ($)	Mar. 31, 2025	Dec. 31, 2024
Accounts receivable, net - beginning balance	$ 1,567,927	$ 1,966,012
Accounts receivable, net - ending balance	1,986,935	1,567,927
Contract assets - beginning balance	1,419,660	1,458,631
Contract assets - ending balance	1,370,960	1,419,660
Contract liabilities - beginning balance	363,818	551,995
Contract liabilities - ending balance	$ 373,202	$ 363,818