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Note 16 - Loans and Line of Credit (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Short-Term Debt [Table Text Block] |
|  |  | Loan |  |  | Interest |  |  | Start | Due |  | June 30, |  |  | December 31, |
Subsidiary | Bank |  | Detail |  |  | Rate |  |  | Date | Date |  | 2025 |  |  | 2024 |
Tongmei | Bank of China (1) |  | $ | 689 |  |  |  | 2.7 | % |  | January-25 | January-26 |  | $ | 690 |  |  | $ | — |
|  |  |  | 579 |  |  |  | 2.7 | % |  | March-25 | March-26 |  |  | 586 |  |  |  | — |
| Bank of China (3) |  |  | 1,410 |  |  |  | 2.4 | % |  | September-24 | September-25 |  |  | 1,410 |  |  |  | 1,370 |
|  |  |  | 1,370 |  |  |  | 2.4 | % |  | November-24 | November-25 |  |  | 1,410 |  |  |  | 1,370 |
|  |  |  | 685 |  |  |  | 2.7 | % |  | November-24 | November-25 |  |  | 700 |  |  |  | 685 |
|  |  |  | 2,480 |  |  |  | 2.5 | % |  | February-25 | February-26 |  |  | 2,490 |  |  |  | — |
| Bank of Communications (1) |  |  | 1,376 |  |  |  | 3.0 | % |  | May-24 | May-25 |  |  | — |  |  |  | 1,370 |
|  |  |  | 2,480 |  |  |  | 3.0 | % |  | June-24 | May-25 |  |  | — |  |  |  | 2,466 |
|  |  |  | 1,420 |  |  |  | 2.5 | % |  | June-25 | December-25 |  |  | 1,420 |  |  |  | — |
|  |  |  | 2,023 |  |  |  | 2.6 | % |  | June-25 | June-26 |  |  | 2,023 |  |  |  | — |
| China Merchants Bank (1) |  |  | 1,386 |  |  |  | 3.5 | % |  | January-24 | January-25 |  |  | — |  |  |  | 1,370 |
|  |  |  | 692 |  |  |  | 3.5 | % |  | February-24 | February-25 |  |  | — |  |  |  | 685 |
|  |  |  | 692 |  |  |  | 3.5 | % |  | April-24 | April-25 |  |  | — |  |  |  | 685 |
|  |  |  | 3,155 |  |  |  | 2.9 | % |  | January-25 | January-26 |  |  | 3,185 |  |  |  | — |
|  |  |  | 978 |  |  |  | 2.9 | % |  | March-25 | March-26 |  |  | 985 |  |  |  | — |
| Bank of Beijing (2) |  |  | 3,600 |  |  |  | 3.0 | % |  | March-24 | February-25 |  |  | — |  |  |  | 3,565 |
|  |  |  | 3,580 |  |  |  | 3.0 | % |  | June-24 | June-25 |  |  | — |  |  |  | 3,565 |
|  |  |  | 2,204 |  |  |  | 2.7 | % |  | March-25 | March-26 |  |  | 2,210 |  |  |  | — |
|  |  |  | 1,405 |  |  |  | 2.6 | % |  | June-25 | March-26 |  |  | 1,405 |  |  |  | — |
|  |  |  | 3,627 |  |  |  | 2.6 | % |  | June-25 | June-26 |  |  | 3,627 |  |  |  | — |
| Industrial Bank (1) |  |  | 2,820 |  |  |  | 3.9 | % |  | September-24 | September-25 |  |  | 2,820 |  |  |  | 2,740 |
|  |  |  | 2,679 |  |  |  | 3.9 | % |  | October-24 | October-25 |  |  | 2,700 |  |  |  | 2,679 |
|  |  |  | 1,440 |  |  |  | 3.2 | % |  | November-24 | November-25 |  |  | 1,455 |  |  |  | 1,440 |
| Industrial Bank (4) |  |  | 1,380 |  |  |  | 3.8 | % |  | March-25 | March-26 |  |  | 1,390 |  |  |  | — |
| NingBo Bank (1) |  |  | 1,647 |  |  |  | 4.3 | % |  | January-24 | January-25 |  |  | — |  |  |  | 1,630 |
|  |  |  | 1,258 |  |  |  | 4.3 | % |  | May-24 | March-25 |  |  | — |  |  |  | 1,255 |
|  |  |  | 1,822 |  |  |  | 3.9 | % |  | November-24 | November-25 |  |  | 1,840 |  |  |  | 1,822 |
|  |  |  | 550 |  |  |  | 3.9 | % |  | December-24 | December-25 |  |  | 558 |  |  |  | 550 |
|  |  |  | 1,584 |  |  |  | 3.9 | % |  | January-25 | January-26 |  |  | 1,590 |  |  |  | — |
|  |  |  | 689 |  |  |  | 3.9 | % |  | March-25 | March-26 |  |  | 700 |  |  |  | — |
|  |  |  | 628 |  |  |  | 3.9 | % |  | Apr-25 | March-26 |  |  | 628 |  |  |  | — |
|  |  |  | 579 |  |  |  | 3.8 | % |  | June-25 | June-26 |  |  | 579 |  |  |  | — |
| Industrial and Commercial Bank of China (1) |  |  | 2,820 |  |  |  | 3.3 | % |  | September-24 | September-25 |  |  | 2,820 |  |  |  | 2,740 |
| China Citic Bank (1) |  |  | 2,752 |  |  |  | 2.9 | % |  | June-24 | June-25 |  |  | — |  |  |  | 2,740 |
|  |  |  | 2,820 |  |  |  | 2.9 | % |  | July-24 | July-25 |  |  | 2,820 |  |  |  | 2,740 |
|  |  |  | 1,420 |  |  |  | 2.9 | % |  | September-24 | September-25 |  |  | 1,420 |  |  |  | 1,370 |
| Agricultural Bank of China (1) |  |  | 1,235 |  |  |  | 2.6 | % |  | November-24 | November-25 |  |  | 1,256 |  |  |  | 1,235 |
|  |  |  | 137 |  |  |  | 2.6 | % |  | December-24 | December-25 |  |  | 140 |  |  |  | 137 |
BoYu | Industrial and Commercial Bank of China (1) |  |  | 1,420 |  |  |  | 2.8 | % |  | September-24 | September-25 |  |  | 1,420 |  |  |  | 1,370 |
| Bank of China (1) |  |  | 1,145 |  |  |  | 2.3 | % |  | September-24 | September-25 |  |  | 837 |  |  |  | 1,096 |
|  |  |  | 274 |  |  |  | 2.4 | % |  | December-24 | December-25 |  |  | 279 |  |  |  | 274 |
| Industrial Bank (1) |  |  | 1,370 |  |  |  | 2.7 | % |  | November-24 | November-25 |  |  | 1,385 |  |  |  | 1,370 |
| Bank of Communications (1) |  |  | 274 |  |  |  | 3.0 | % |  | May-24 | May-25 |  |  | — |  |  |  | 274 |
|  |  |  | 767 |  |  |  | 2.6 | % |  | June-25 | June-26 |  |  | 767 |  |  |  | — |
| China Merchants Bank (1) |  |  | 419 |  |  |  | 2.4 | % |  | June-25 | June-26 |  |  | 419 |  |  |  | — |
| NanJing Bank (1) |  |  | 1,370 |  |  |  | 2.8 | % |  | December-24 | December-25 |  |  | 1,385 |  |  |  | 1,370 |
| Loan Balance |  |  |  |  |  |  |  |  |  |  |  |  | $ | 51,349 |  |  | $ | 45,963 |
Schedule of Maturities of Long-Term Debt [Table Text Block] |
Maturity of long-term loans |  |  |  |
2025 |  | $ | 977 |
2026 |  |  | 4,046 |
2027 |  |  | 977 |
2028 |  |  | 1,256 |
2029 |  |  | 2,390 |

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- Definition Tabular disclosure of short-term debt arrangements (having initial terms of repayment within one year or the normal operating cycle, if longer) including: (1) description of the short-term debt arrangement; (2) identification of the lender or type of lender; (3) repayment terms; (4) weighted average interest rate; (5) carrying amount of funds borrowed under the specified short-term debt arrangement as of the balance sheet date; (6) description of the refinancing of a short-term obligation when that obligation is excluded from current liabilities in the balance sheet; and (7) amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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