Note 7 - Debt - Schedule of Debt Instruments (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Current portion of notes payable	$ 1,519,000	$ 1,384,000
Other long-term liabilities	27,807,000	32,838,000
Long term portion of notes payable	2,773,000	3,002,000
Total	343,275,000	437,203,000	$ 50,600
Convertible Notes [Member]
Debt Instrument [Line Items]
Current portion of notes payable	0	170,000
Long term portion of notes payable	80,466,000	173,606,000
Line Of Credit And Notes And Loans Payable Current [Member]
Debt Instrument [Line Items]
Total	14,024,000	14,849,000
Other Noncurrent Liabilities [Member]
Debt Instrument [Line Items]
Total	248,785,000	248,578,000
Notes Payable And Other Long Term Liabilities [Member]
Debt Instrument [Line Items]
Current portion of notes payable	1,519,000	1,384,000
Other long-term liabilities	2,773,000	3,002,000
Total	4,292,000	4,386,000
The 2044 Convertible Notes [Member]
Debt Instrument [Line Items]
Total	246,012,000	245,576,000
The 2029 Convertible Notes [Member]
Debt Instrument [Line Items]
Total	80,416,000	173,556,000
The 2025 Convertible Notes [Member]
Debt Instrument [Line Items]
Total	0	170,000
The 2033 Senior Notes [Member]
Debt Instrument [Line Items]
Total	50,000	50,000
Chilean and Spanish Lines of Credit [Member]
Debt Instrument [Line Items]
Total	$ 12,505,000	$ 13,465,000