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Note 16 - Loans and Line of Credit (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Feb. 28, 2025 | Jan. 31, 2024 | Jun. 30, 2025 | Dec. 31, 2023 | Dec. 31, 2024 | Jan. 30, 2024
Proceeds from Lines of Credit |  | $ 5,800 |  |  |  |
Short-Term Debt |  |  | $ 51,349 |  | $ 45,963 |
Debt, Current |  |  | 55,928 |  | $ 47,264 |
Short-Term Bank Loans and Notes Payable |  |  | 51,300 |  |  |
Long-Term Debt, Current Maturities |  |  | 4,600 |  |  |
February 2025 Unsecured Loan [Member] |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.20% |  |  |  |  |
Debt Instrument, Face Amount | $ 2,700 |  |  |  |  |
Debt Instrument, Term (Year) | 14 years |  |  |  |  |
Five Year Bank Loan [Member] |  |  |  |  |  |
Loans Payable, Noncurrent |  |  | 5,000 |  |  |
ChaoYang XinMei [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 2,100 |  |
Debt Instrument, Option to Repurchase Production Line and Related Equipment |  |  |  | $ 14 |  |
Other Noncurrent Liabilities [Member] |  |  |  |  |  |
Long-Term Line of Credit, Noncurrent |  |  | 5,000 |  |  |
Short Term Borrowings [Member] |  |  |  |  |  |
Line of Credit, Current |  |  | 600 |  |  |
Short Term Borrowings [Member] | ChaoYang XinMei [Member] |  |  |  |  |  |
Short-Term Debt |  |  | $ 1,300 |  |  |
Line of Credit [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 9,700
Long-Term Debt, Term (Year) |  |  |  |  |  | 5 years
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 6.50%
Beijing Tongmei Xtal Technology [Member] |  |  |  |  |  |
Debt Instrument, Guarantee Fee Percentage |  |  | 1.00% |  |  |

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- Definition Amount of debt and lease obligation, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(21)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
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