Note 1 - Organization and Basis for Presentation - Disaggregation of Revenue by Major Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue	$ 40,670	$ 24,851	$ 76,553	$ 55,402
Americas [Member]
Revenue	27,329	14,942	51,028	33,278
EMEA [Member]
Revenue	10,803	7,950	20,665	18,300
Asia Pacific [Member]
Revenue	$ 2,538	$ 1,959	$ 4,860	$ 3,824