Note 11 - Revenue and Geographic Information - Total Revenue by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue	$ 39,657	$ 38,145	$ 76,350	$ 72,437
Percentage of Revenue	100.00%	100.00%	100.00%	100.00%
UNITED STATES
Revenue	$ 29,686	$ 30,069	$ 56,459	$ 55,074
Percentage of Revenue	75.00%	79.00%	73.00%	76.00%
Europe [Member]
Revenue	$ 5,292	$ 5,089	$ 11,088	$ 10,570
Percentage of Revenue	13.00%	13.00%	15.00%	15.00%
Other Location [Member]
Revenue	$ 4,679	$ 2,987	$ 8,803	$ 6,793
Percentage of Revenue	12.00%	8.00%	12.00%	9.00%