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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Statement of Income and Comprehensive Income |  |
Net Income | $ 167,925 | $ 91,324
Reclassification to retained earnings due to cumulative effect of accounting change | (50) | (605)
Other comprehensive income (loss) before tax: |  |
Foreing currency translation adjustment | (1,238) | 93
Amortization of net losses of pension and postretirement benefit plans | 5,876 | 5,386
Amortization of prior service credit of pension and postretirement benefit plans | 0 | (867)
Unrealized holding gains (losses) on debt securities arising during the period | 109,863 | (121,189)
Unrealized net (losses) gains on cash flow hedges | (682) | 1,225
Reclassification adjustment for net losses (gains) included in net income | 1,030 | (1,267)
Other comprehensive income (loss) before tax | 114,799 | (117,224)
Income tax (expense) benefit | (10,804) | 5,038
Total other comprehensive income (loss), net of tax | 103,995 | (112,186)
Comprehensive income (loss), net of tax | $ 271,920 | $ (20,862)

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