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Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Statement of Comprehensive Income [Abstract] |  |  |  |
Net income | $ 26,363 | $ 40,982 | $ 75,279 | $ 140,473
Unrealized gains and losses on securities: |  |  |  |
Change in unrealized securities gains (losses) arising during period | (11,444) | 3,470 | 32,006 | (36,998)
Tax effect | 4,444 | (1,177) | (12,425) | 14,657
Total change in unrealized gains and losses on securities, net of tax | (7,000) | 2,293 | 19,581 | (22,341)
Change in fair value of cash flow hedges: |  |  |  |
Change in unrecognized loss on cash flow hedges | 949 | 287 | 2,236 | 2,489
Tax effect | (367) | (186) | (863) | (1,055)
Total change in unrecognized loss on cash flow hedges, net of tax | 582 | 101 | 1,373 | 1,434
Change in pension obligation: |  |  |  |
Reclassification adjustment for gains included in income before income taxes | 822 | 4,298 | 4,019 | 12,896
Tax effect | (319) | (2,061) | (1,563) | (5,428)
Total change in pension obligation, net of tax | 503 | 2,237 | 2,456 | 7,468
Net current period other comprehensive (loss) income | (5,915) | 4,631 | 23,410 | (13,439)
Total comprehensive income | $ 20,448 | $ 45,613 | $ 98,689 | $ 127,034

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