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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Net income | $ 93,072 | $ 111,586 | $ 147,825 | $ 228,082
Other comprehensive income (loss), before tax: |  |  |  |
Change in net unrealized gain/loss on securities available for sale during the period | 156,509 | 158,140 | 386,627 | 356,286
Change in net unrealized gain on securities transferred to held to maturity | (308) | (308) | (685) | (652)
Reclassification adjustment for net (gains) losses included in net income | 0 | (169) | (108,989) | (169)
Total securities available for sale and transferred securities, before tax amount | 156,201 | 157,663 | 276,953 | 355,465
Defined-benefit post-retirement benefit plans: |  |  |  |
Reclassification adjustment for net amortization of actuarial gain/loss included in net income as a component of net periodic cost (benefit) | 1,329 | 1,406 | 2,659 | 2,812
Total defined-benefit post-retirement benefit plans | 1,329 | 1,406 | 2,659 | 2,812
Other comprehensive income (loss), before tax | 157,530 | 159,069 | 279,612 | 358,277
Deferred tax expense (benefit) | 33,081 | 33,405 | 58,718 | 75,239
Other comprehensive income (loss), net of tax | 124,449 | 125,664 | 220,894 | 283,038
Comprehensive income (loss) | $ 217,521 | $ 237,250 | $ 368,719 | $ 511,120

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