Note 3 - Revenue from Contracts with Customers - Deferred Costs of Revenue Balances Included in Prepaid Expenses (Details)	3 Months Ended
	Mar. 31, 2022 USD ($)
Balance, deferred costs of revenue	$ 154,218
Deferred costs added	2,800
Deferred costs expensed	(55,362)
Balance, deferred costs of revenue	$ 101,656