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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Operating activities:      
Net income $ 2,479,642 $ 864,847 $ 133,807
Less: Loss from discontinued operations, net of tax     (141)
Net income from continuing operations 2,479,642 864,847 133,948
Adjustments to reconcile net income to net cash provided by operating activities:      
Share-based compensation 307,447 10,077 17,908
Depreciation of property, plant and equipment 107,097 77,366 68,686
Prepaid land use rights 1,220 821 693
Loss on disposal of property plant and equipment 8,904 2,749 1,103
Inventory write-down 0 0 1,956
Fair value change of short-term investments (1,110) (2,407)  
Others 8,407 4,378 616
Changes in operating assets and liabilities:      
Accounts receivable     13
Notes receivable (816,238) (360,259) 5,553
Prepaid expenses and other current assets (14,923) (31,556) 6,689
Advances to suppliers 2,341 4,755 (6,018)
Inventories 138,258 (280,187) (5,125)
Amounts due from related parties (4) 118 (94)
Operating lease right-of-use assets     65
Other non-current assets   62 (145)
Accounts payable 6,999 61,067 4,556
Notes payable   (26,068) (54,345)
Accrued expenses and other current liabilities 14,241 9,727 16,138
Income tax payable 160,058 47,451 16,629
Advances from customers (3,616) 243,695 3,335
Amounts due to related parties (124) 25 (38)
Deferred government subsidies (1,005) (562) (497)
Lease liability   (83) (86)
Deferred taxes 65,058 12,973 (1,787)
Net cash provided by operating activities-continuing operations 2,462,652 638,989 209,753
Net cash used in operating activities-discontinued operations     (50)
Net cash provided by operating activities 2,462,652 638,989 209,703
Investing activities:      
Purchases of property, plant and equipment (1,205,330) (498,505) (118,292)
Purchases of land use rights (45,188) (9,755)  
Purchase of short-term investments (46,192) (501,441)  
Redemption of short-term investments 298,294 227,807  
Net cash used in investing activities-continuing operations (998,416) (781,894) (118,292)
Net cash used in investing activities-discontinued operations     (195)
Net cash used in investing activities (998,416) (781,894) (118,487)
Financing activities:      
Proceeds from related parties loans   13,213 22,869
Repayment of related parties loans   (18,133) (47,538)
Proceeds from bank borrowings 178,752 48,822 98,573
Repayment of bank borrowings (178,752) (244,776) (198,043)
Proceeds from options exercised 995 2,139 580
Proceeds from sales of equity interest in the Group's subsidiary     28,088
Acquisition of minority interest of a subsidiary (776)    
Proceeds from subsidiary's public offering of ordinary shares, net of issuance costs paid of $59 million   934,960  
Payments for repurchase of common shares (124,929)    
Subsidiary's dividend payment (33,762)    
Proceeds from Subsidiary's follow-on offering of its equity interests, net of issuance costs paid of $9.4 million 1,630,563    
Net cash (used in) provided by financing activities-continuing operations 1,472,091 736,225 (95,471)
Net cash used in financing activities-discontinued operations
Net cash (used in) provided by financing activities 1,472,091 736,225 (95,471)
Effect of exchange rate changes on cash, cash equivalents and restricted cash (139,942) 12,242 7,365
Net increase in cash, cash equivalents and restricted cash 2,796,385 605,562 3,110
Cash, cash equivalents and restricted cash at the beginning of the year (includes $845,199, nil and nil of cash, cash equivalents and restricted cash in current assets associated with discontinued operations on December 31, 2020, 2021 and 2022) 723,966 118,404 115,294
Cash, cash equivalents and restricted cash at the end of the year 3,520,351 723,966 118,404
Cash and cash equivalents 3,499,488 723,775 76,596
Restricted cash 20,863 191 41,808
Total cash, cash equivalents, and restricted cash shown in the statements of cash flows 3,520,351 723,966 118,404
Supplemental disclosure of cash flow information:      
Interest paid, net of capitalized interest 7,926 21,158 24,696
Income taxes paid 350,583 108,099 12,808
Supplemental schedule of non-cash investing activities:      
Purchases of property, plant and equipment included in payables 251,127 142,937 73,148
Purchase of property, plant and equipment included in amounts due to related parties - short-term portion $ 4,082 $ 5,979 $ 198