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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 | $ 38,502 | $ 46,996 | $ 119,135 | $ 120,472
Unrealized holding (losses) gains arising during period | (8,444) | 5,442 | 70,473 | (18,132)
Non-credit portion of other-than-temporary impairments recognized in other comprehensive income | 0 | 0 | (6) | 0
Amounts reclassified into net income: Held-to-maturity securities | (9) | (63) | (68) | (353)
Amounts reclassified into net income: Non-credit other-than-temporary impairments | 0 | 0 | 0 | 232
Amounts reclassified into net income: Realized gains on available-for-sale securities | (2,395) | (199) | (1,786) | (10,906)
Total unrealized (losses) gains on investment securities | (10,848) | 5,180 | 68,613 | (29,159)
Amount reclassified into net income: Net actuarial loss | 1,050 | 1,110 | 3,021 | 3,332
Total defined benefit pension and post-retirement plans | 1,050 | 1,110 | 3,021 | 3,332
Other comprehensive (loss) income | (9,798) | 6,290 | 71,634 | (25,827)
Comprehensive income | $ 28,704 | $ 53,286 | $ 190,769 | $ 94,645

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