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Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Consolidated Statements of Comprehensive Income (unaudited) [Abstract] |  |  |  |
Net income | $ 19,281 | $ 27,640 | $ 37,447 | $ 45,649
Other comprehensive (loss) income, net of tax: |  |  |  |
Unrealized net holding (losses) gains arising during the period (pre-tax amounts of ($5,277), $8,267, ($434) and $16,892) | (3,223) | 4,992 | (266) | 10,200
Reclassification adjustment for net gains related to securities available for sale included in net income (pre-tax amounts of $26, $14, $40 and $21) | (16) | (8) | (24) | (13)
Amortization of unrealized net gains and losses related to the reclassification of available for sale investment securities to held to maturity (pre-tax amounts of $307, $-, $614 and $-) | 205 | 0 | 410 | 0
Pension and other benefits: |  |  |  |
Amortization of prior service cost and actuarial gains (pre-tax amounts of $560, $19, $1,120 and $38) | 342 | 11 | 684 | 23
Total other comprehensive (loss) income | (2,692) | 4,995 | 804 | 10,210
Comprehensive income | $ 16,589 | $ 32,635 | $ 38,251 | $ 55,859

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