Note 1 - Organization and Significant Accounting Policies - Concentrations Risk by Geographic Locations (Details) - Revenue Benchmark [Member] - Geographic Concentration Risk [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
UNITED STATES
Revenue by customers' geographic locations, percentage	75.00%	82.00%	77.00%	80.00%
EMEA [Member]
Revenue by customers' geographic locations, percentage	17.00%	10.00%	17.00%	11.00%
CANADA
Revenue by customers' geographic locations, percentage	5.00%	5.00%	3.00%	6.00%
Geographic, Other [Member]
Revenue by customers' geographic locations, percentage	3.00%	3.00%	3.00%	3.00%
All Location [Member]
Revenue by customers' geographic locations, percentage	100.00%	100.00%	100.00%	100.00%