Note 5 - Goodwill and Other Intangible Assets, Net (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Goodwill and Intangible Asset Impairment, Total	$ 0
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	1 year
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years