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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Net income | $ 80,219 | $ 75,850 | $ 220,542 | $ 221,090
Other comprehensive income (loss), before tax: |  |  |  |
Change in net unrealized gain/loss on securities available for sale during the period | (95,641) | 86,445 | 191,865 | 7,704
Change in net unrealized gain on securities transferred to held to maturity | (7,278) | (8,831) | (24,629) | (24,925)
Reclassification adjustment for net (gains) losses included in net income | 37 | 52 | (14,866) | (176)
Total securities available for sale and transferred securities, before tax amount | (102,882) | 77,666 | 152,370 | (17,397)
Defined-benefit post-retirement benefit plans: |  |  |  |
Change in the net actuarial gain/loss | 1,585 | 1,748 | 4,691 | 5,246
Remeasurement of projected benefit obligation related to SERP | 0 | 0 | (862) | 0
Reclassification adjustment for SERP settlement costs included in net income | 0 | 0 | 187 | 0
Total defined-benefit post-retirement benefit plans | 1,585 | 1,748 | 4,016 | 5,246
Other comprehensive income (loss), before tax | (101,297) | 79,414 | 156,386 | (12,151)
Deferred tax expense (benefit) related to other comprehensive income | (35,453) | 27,795 | 54,736 | (4,253)
Other comprehensive income (loss), net of tax | (65,844) | 51,619 | 101,650 | (7,898)
Comprehensive income (loss) | $ 14,375 | $ 127,469 | $ 322,192 | $ 213,192

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