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Financial Statement Schedule I - STATEMENTS OF OPERATIONS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Condensed Financial Statements |  |  |
Net revenues | $ 3,476,495 | $ 3,200,583 | $ 3,744,512
Cost of revenues | 2,786,581 | 2,482,086 | 2,969,430
Gross profit | 689,914 | 718,497 | 775,082
Operating expenses: |  |  |
General and administrative expenses | 225,597 | 242,783 | 245,376
Research and development expenses | 45,167 | 47,045 | 44,193
Other operating loss, net | (25,523) | (10,536) | (44,546)
Total operating expenses | 469,484 | 459,618 | 410,425
Income (loss) from operations | 220,430 | 258,879 | 364,657
Other income (expenses): |  |  |
Interest expense | (71,874) | (81,326) | (106,032)
Interest income | 9,306 | 12,039 | 11,207
(Loss) gain on change in fair value of derivatives, net | 50,001 | (22,218) | (19,230)
Foreign exchange gain (loss) | (64,820) | 10,370 | 6,529
Investment (loss) gain | (8,559) | 1,929 | 41,361
Other income (expenses), net: | (85,946) | (79,206) | (66,165)
Income (loss) before income taxes and equity in earnings (loss) of subsidiaries and unconsolidated investees | 134,484 | 179,673 | 298,492
Income tax (expense) benefit | 1,983 | (42,066) | (61,969)
Net income attributable to Canadian Solar Inc. | 146,703 | 171,585 | 237,070
Reportable Legal Entities [Member] | Parent Company |  |  |
Condensed Financial Statements |  |  |
Net revenues | 2,170 | 4,351 | 86,755
Cost of revenues |  | 4,188 | 53,926
Gross profit | 2,170 | 163 | 32,829
Operating expenses: |  |  |
Selling and distribution expenses | 2,174 | 1,727 | 2,518
General and administrative expenses | 49,688 | 29,093 | 18,970
Research and development expenses | 692 | 462 | 795
Other operating loss, net |  |  | 77
Total operating expenses | 52,554 | 31,282 | 22,360
Income (loss) from operations | (50,384) | (31,119) | 10,469
Other income (expenses): |  |  |
Interest expense | (9,628) | (3,005) | (9,170)
Interest income | 30,536 | 25,272 | 32,370
(Loss) gain on change in fair value of derivatives, net | 25,341 | (5,193) | (2,671)
Foreign exchange gain (loss) | 13,768 | (11,318) | 22,255
Investment (loss) gain |  | (116,879) |
Other income (expenses), net: | 60,017 | (111,123) | 42,784
Income (loss) before income taxes and equity in earnings (loss) of subsidiaries and unconsolidated investees | 9,633 | (142,242) | 53,253
Income tax (expense) benefit | (34,223) | 5,230 | (12,133)
Equity in earnings of subsidiaries | 171,293 | 308,597 | 195,950
Net income attributable to Canadian Solar Inc. | $ 146,703 | $ 171,585 | $ 237,070

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