Note 5 - Concentration of Risk - Risk Exposure (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jan. 01, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jan. 01, 2023 USD ($)
Accounts receivable (including related-party), beginning of period	$ 6,414		$ 6,414		$ 4,300	$ 4,300	$ 1,148
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Significant Customers	2	3	3	3
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]
% Total Revenue from Operations	68.90%
Accounts receivable (including related-party), beginning of period	$ 5,900		$ 5,900
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Three Customers [Member]
% Total Revenue from Operations		83.70%	80.50%	72.70%
Accounts receivable (including related-party), beginning of period	$ 5,900	$ 1,500	$ 5,900	$ 1,500