Note 5 - Goodwill and Other Intangibles (Details Textual)	6 Months Ended
	Jun. 30, 2020
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	2 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	16 years
Weighted Average [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	12 years 9 months 18 days