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Financial Statement Schedule I - STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Operating activities: |  |  |
Net income | $ 109,876 | $ 147,246 | $ 166,555
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 282,769 | 209,118 | 159,723
Accretion of convertible notes | 1,461 | 388 |
Loss (gain) on disposal of property, plant and equipment | 83 | (253) | 1,227
Loss (gain) on change in fair value of derivatives | (23,785) | (50,001) | 22,218
Allowance for credit losses | 7,615 | 9,874 | 1,250
Share-based compensation | 8,808 | 12,350 | 10,682
Changes in operating assets and liabilities: |  |  |
Accounts receivable trade | (284,785) | 65,379 | 51,670
Amounts due from subsidiaries | (68,912) | 26,828 | (17,347)
Prepaid expenses and other current assets | (85,754) | (72,188) | 33,283
Other non-current assets | 20,357 | (11,913) | (24,037)
Accounts payable | 11,023 | (89,180) | 209,175
Amounts due to subsidiaries | (171) | (9,773) | (5,798)
Liability for uncertain tax positions | (7,281) | (623) | (4,775)
Net deferred tax assets | (67,386) | (21,439) | (12,455)
Net settlement of derivatives | 31,886 | 33,054 | (27,012)
Net cash provided by (used in) operating activities | (408,254) | (120,541) | 600,111
Investing activities: |  |  |
Net cash used in investing activities | (429,570) | (319,662) | (294,102)
Financing activities: |  |  |
Repayment of short-term borrowings | (1,879,884) | (1,561,597) | (1,649,721)
Net proceeds from issuance of common shares | 148,510 |  |
Proceeds from changes in ownership interests in subsidiaries without change of control | 10,003 | 261,332 | 11,488
Net proceeds from issuance of convertible notes |  |  | (127,500)
Payments for repurchase of common shares |  | (5,963) | (11,845)
Proceeds from exercise of stock options |  | 1,035 | 875
Net cash provided by (used in) financing activities | 614,071 | 823,501 | (34,614)
Effect of exchange rate changes | 18,320 | 50,997 | (6,965)
Net increase (decrease) in cash, cash equivalents and restricted cash | (205,433) | 434,295 | 264,430
Cash, cash equivalents and restricted cash at the beginning of the year | 1,639,715 | 1,205,420 | 940,990
Cash, cash equivalents and restricted cash at the end of the year | 1,434,282 | 1,639,715 | 1,205,420
Supplemental disclosure of cash flow information: |  |  |
Interest paid (net of amounts capitalized) | 71,006 | 78,747 | 85,362
Parent Company | Reportable Legal Entities [Member] |  |  |
Operating activities: |  |  |
Net income | 95,248 | 146,703 | 171,585
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 150 | 156 | 154
Accretion of convertible notes | 1,461 | 388 |
Loss on disposal of subsidiaries |  |  | 116,879
Loss (gain) on change in fair value of derivatives | (4,043) | (25,341) | 5,193
Allowance for credit losses |  | 357 | (83)
Equity in earnings of subsidiaries | (101,385) | (171,293) | (308,597)
Share-based compensation | 8,808 | 12,350 | 10,682
Changes in operating assets and liabilities: |  |  |
Amounts due from subsidiaries | (206,892) | 287,865 | (43,630)
Prepaid expenses and other current assets | 17,353 | (13,183) | 17,012
Other non-current assets | (4,907) | 28,459 | (1,158)
Amounts due to subsidiaries | (42,224) | (340,502) | 183,675
Other current liabilities | (27,293) | 31,809 | (2,707)
Liability for uncertain tax positions | (5,915) | 306 | 408
Net deferred tax assets | 805 | (468) | (1,292)
Net settlement of derivatives | 4,633 | 19,517 | (11,125)
Net cash provided by (used in) operating activities | (264,201) | (22,877) | 136,996
Investing activities: |  |  |
Investments in subsidiaries | (138,456) | (126,487) | (36,146)
Investments in affiliates | (5,273) | (2,766) | (2,483)
Funding of loans to subsidiaries | (201,192) | (264,848) | (40,600)
Repayment of loans from interest receivables | 253,816 | 20,485 | 12,809
Net cash used in investing activities | (91,105) | (373,616) | (66,420)
Financing activities: |  |  |
Repayment of short-term borrowings | (80,000) | 30,000 |
Proceeds long-term borrowings |  |  | 50,000
Funding of loans from a subsidiary | 280,000 |  |
Net proceeds from issuance of common shares | 148,510 |  |
Proceeds from changes in ownership interests in subsidiaries without change of control |  | 224,553 |
Net proceeds from issuance of convertible notes |  | 222,826 |
Payments for repurchase of convertible notes |  |  | (127,500)
Payments for repurchase of common shares |  | (5,963) | (11,845)
Proceeds from exercise of stock options |  | 1,035 | 875
Net cash provided by (used in) financing activities | 348,510 | 472,451 | (88,470)
Effect of exchange rate changes | (797) | (43,246) | 11,110
Net increase (decrease) in cash, cash equivalents and restricted cash | (7,593) | 32,712 | (6,784)
Cash, cash equivalents and restricted cash at the beginning of the year | 35,025 | 2,313 | 9,097
Cash, cash equivalents and restricted cash at the end of the year | 27,432 | 35,025 | 2,313
Supplemental disclosure of cash flow information: |  |  |
Interest paid (net of amounts capitalized) | $ 20,272 | $ 7,966 | $ 4,644

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