Note 11 - Notes Payable and Long-term Debt - Schedule of Notes Payable and Long-term Debt (Details) (Parentheticals) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Taiwan Bank [Member]
Long-term debt, maximum	$ 8.8
Long-term debt, interest	3.00%
Taiwan Bank [Member] \| Equipment Term Loan [Member]
Long-term debt, maturity date	Jun. 11, 2029
Taiwan Bank [Member] \| Revolving Credit Facility [Member]
Long-term debt, maturity date	Jun. 11, 2027
Loan Agreement [Member] \| China Bank [Member]
Long-term debt, maximum	$ 44.0	$ 44.0
Loan Agreement [Member] \| China Bank [Member] \| Equipment Term Loan [Member]
Long-term debt, interest	3.00%	3.00%
Long-term debt, maturity date	Jun. 12, 2032	Jun. 12, 2032
Loan Agreement [Member] \| China Bank [Member] \| Revolving Credit Facility [Member]
Long-term debt, interest	2.60%	2.60%
Long-term debt, maturity date	Jun. 25, 2027	Jun. 25, 2027
Debt Maturing March 26, 2027 [Member] \| Revolving Credit Facility [Member]
Long-term debt, maximum	$ 14.7	$ 14.7
Long-term debt, interest	2.45%	2.45%
Long-term debt, maturity date	Mar. 26, 2027	Mar. 26, 2027
Debt Maturing May 8, 2028 [Member] \| Revolving Credit Facility [Member]
Long-term debt, maximum	$ 3.0
Long-term debt, interest	3.00%
Long-term debt, maturity date	May 08, 2028
Debt Maturing December 28, 2028 [Member] \| Revolving Credit Facility [Member]
Long-term debt, maximum	$ 2.9
Long-term debt, interest	2.45%
Long-term debt, maturity date	Dec. 28, 2026
Debt Maturing June 25, 2027 [Member] \| Revolving Credit Facility [Member]
Long-term debt, maximum	$ 14.7
Long-term debt, interest	2.31%
Long-term debt, maturity date	Jun. 25, 2027
Debt Maturing June 11, 2027 [Member] \| Revolving Credit Facility [Member]
Long-term debt, maximum	$ 2.9
Long-term debt, interest	2.40%
Long-term debt, maturity date	Jun. 11, 2027
Debt Maturing Jul7 13, 2026 [Member] \| Revolving Credit Facility [Member]
Long-term debt, maximum	$ 3.1
Long-term debt, interest	2.50%
Long-term debt, maturity date	Jul. 13, 2026
Debt Maturing August 25, 2026 [Member] \| Revolving Credit Facility [Member]
Long-term debt, maximum	$ 3.1
Long-term debt, interest	3.20%
Long-term debt, maturity date	Aug. 25, 2026