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Consolidated Statements of Condition (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Securities Available-for-sale, pledged | $ 1,372,238 | $ 1,228,702
Preferred stock, par | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 5,000,000 | 5,000,000
Preferred stock, Series A shares issued | 515,000 | 515,000
Preferred stock, Series A shares outstanding | 515,000 | 515,000
Common stock, par | $ 0.01 | $ 0.01
Common stock, shares authorized | 900,000,000 | 900,000,000
Common stock, shares issued | 490,439,070 | 490,439,070
Common stock, shares outstanding | 467,346,781 | 473,536,604
Treasury stock, shares | 23,092,289 | 16,902,466
Net unrealized (loss) gain on securities available for sale, tax | $ (11,941) | $ 4,201
Net unrealized loss on the non-credit portion of other-than-temporary impairment losses on securities, tax | 2,517 | 2,517
Net unrealized loss on pension and post-retirement obligations, tax | 22,191 | $ 27,224
Cash flow hedges tax component | $ 333 |

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