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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 578,276 | $ 487,476 | $ 288,934
Other comprehensive income (loss): |  |  |
Unrealized gains (losses) on investments | 7,993 | (2,561) | (716)
Unrealized gains (losses) on cash flow hedges | (38,414) | 11,907 | 19,195
Total unrealized gains (losses) | (30,421) | 9,346 | 18,479
Income tax (expense) benefit | 7,431 | (2,333) | (7,060)
Other comprehensive income (loss), net of tax (expense) benefit | (22,990) | 7,013 | 11,419
Total comprehensive income | $ 555,286 | $ 494,489 | $ 300,353

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