Note 1 - Basis of Presentation (Details Textual) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Jan. 01, 2019
Contract with Customer, Liability, Current	$ 97,059		$ 123,529
Accounts Receivable, Allowance for Credit Loss, Current	186,067		123,165
Capitalized Computer Software, Additions	313,983	$ 238,248
Asset Impairment Charges, Total	0		0
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount, Ending Balance	490,893	$ 506,153	506,153
Operating Lease, Right-of-Use Asset	2,366,775		$ 2,480,902	$ 2,688,412
Operating Lease, Liability, Total	$ 2,525,072			$ 2,775,259