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v3.25.1

Lines of Credit (Details) ¥ in Millions | 3 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2025 USD ($) | Mar. 31, 2025 CNY (¥) | Mar. 31, 2024 USD ($) | Apr. 14, 2025 USD ($) | Mar. 31, 2025 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 CNY (¥) | Dec. 16, 2024 USD ($) | Aug. 29, 2024 USD ($) | Aug. 29, 2024 CNY (¥)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) [Member] | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |
Amount outstanding under line of credit | $ 31,015,000 |  |  |  |  | $ 36,960,000 |  |  |  |
Line of credit | US Bank |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate | 3.00% | 3.00% |  |  |  |  |  |  |  |
Line of credit facility, commitment fee percentage | 0.25% | 0.25% |  |  |  |  |  |  |  |
Effective interest rate | 7.31% |  |  |  | 7.31% | 7.31% | 7.31% |  |  |
Line of credit | Second Amended Credit Agreement |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  | $ 75,000,000.0 |  |
Remaining borrowing capacity | $ 56,100,000 |  |  |  |  |  |  |  |  |
Line of credit | Second Amended Credit Agreement | Subsequent Event |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  |  | $ 59,100,000 |  |  |  |  |  |
Line of credit | U.S. Line of Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity | 36,100,000 |  |  |  |  |  |  |  |  |
Amount outstanding under line of credit | 20,000,000 |  |  |  |  | $ 26,000,000 |  |  |  |
Interest expense on borrowings | 600,000 |  | $ 1,300,000 |  |  |  |  |  |  |
Facility fee expense | 0 |  | $ 0 |  |  |  |  |  |  |
Line of credit | China Line of Credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  | $ 11,000,000.0 | ¥ 80.0
Remaining borrowing capacity | 0 |  |  |  |  | 0 |  |  |  |
Amount outstanding under line of credit | 11,000,000 |  |  |  | ¥ 80.0 | $ 11,000,000 | ¥ 80.0 |  |  |
Interest expense on borrowings | $ 100,000 | ¥ 0.6 |  |  |  |  |  |  |  |
Line of credit | China Line of Credit | National Interbank |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate | 0.10% | 0.10% |  |  |  |  |  |  |  |
Line of credit, interest rate | 3.07% |  |  |  | 3.07% | 3.07% | 3.07% |  |  |
Letter of credit |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Letter of credit outstanding amount | $ 0 |  |  |  |  | $ 0 |  |  |  |

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: 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(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-6 + 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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