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Consolidated Statements of Operations and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Change in net unrealized gain (loss) on securities available for sale, tax | $ (12,868) | $ 24,607
Change in the non-credit portion of OTTI losses recognized in other comprehensive income (loss), tax | 0 | (821)
Change in pension and post-retirement obligations, tax | (711) | $ 10,517
Reclassification adjustment for sales of available-for-sale securities, tax | $ 1,517 |

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