Note 2 - Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 31, 2021
Capitalized Internal Use Software Costs [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	7 years