Note 4 -Business Segments, Sales of Products and Significant Customers - Summary of Trade Accounts Receivable (Details) - Trade Accounts Receivable [Member] - Customer Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Customer B [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	46.10%	22.20%	57.50%
Customer C [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	16.80%	3.30%	3.10%
Customer D [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	28.20%		2.10%
Customer E [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	7.20%	24.20%	3.20%
Customer F [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable			15.90%
Customer G [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable			11.80%
Customer H [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable		34.80%