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Summary of Significant Accounting Policies - Concentration of credit risk (Details) $ in Thousands	Dec. 31, 2024 USD ($) item	Dec. 31, 2023 USD ($) item
Concentration of credit risk
Advances to suppliers	$ 124,440	$ 193,818
Supplier
Concentration of credit risk
Number of major suppliers | item	3	0
Supplier | Supplier one
Concentration of credit risk
Advances to suppliers	$ 46,486
Supplier | Supplier two
Concentration of credit risk
Advances to suppliers	33,855
Supplier | Supplier three
Concentration of credit risk
Advances to suppliers	$ 24,764

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- Definition

Represents number of major suppliers.

+ References

No definition available.

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- Definition

Carrying value of capitalized payments made in advance for inventory that is expected to be received within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478785/954-310-50-2

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