Note 2 - Summary of Significant Accounting Policies - Concentrations (Details) - Customer Concentration Risk - customer	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts Receivable.
Concentrations
Number of Major Customers	3
Accounts Receivable. | Minimum
Concentrations
Concentration Risk, Percentage	10.00%
Accounts Receivable. | Customer A
Concentrations
Concentration Risk, Percentage	22.00%
Accounts Receivable. | Customer B
Concentrations
Concentration Risk, Percentage	19.00%
Accounts Receivable. | Customer C
Concentrations
Concentration Risk, Percentage	15.00%
Accounts Receivable. | Total Customer Base
Concentrations
Concentration Risk, Percentage	56.00%
Revenue Benchmark
Concentrations
Number of Major Customers	3	2	3
Revenue Benchmark | Minimum
Concentrations
Concentration Risk, Percentage			10.00%
Revenue Benchmark | Customer A
Concentrations
Concentration Risk, Percentage	15.00%	21.00%	30.00%
Revenue Benchmark | Customer A | North America
Concentrations
Concentration Risk, Percentage	33.00%
Revenue Benchmark | Customer B
Concentrations
Concentration Risk, Percentage	13.00%	17.00%	15.00%
Revenue Benchmark | Customer B | North America
Concentrations
Concentration Risk, Percentage		58.00%
Revenue Benchmark | Customer C
Concentrations
Concentration Risk, Percentage	13.00%		13.00%
Revenue Benchmark | Customer C | North America
Concentrations
Concentration Risk, Percentage			51.00%
Revenue Benchmark | Total Customer Base
Concentrations
Concentration Risk, Percentage	41.00%	38.00%	58.00%