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CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Assets: |  |
Available-for-sale investment securities, pledged amount | $ 597,088 | $ 466,902
Amortized Cost | 3,500,726 | 4,675,474
Held-to-maturity securities, fair value | 1,063,444 | 1,034,795
Equity and other securities, cost | $ 62,141 | $ 82,424
Shareholders' equity: |  |
Preferred stock, par value (in dollars per share) | $ 1.00 | $ 1.00
Preferred stock, shares authorized | 500,000 | 500,000
Preferred stock, shares issued | 0 | 0
Common stock, par value (in dollars per share) | $ 1.00 | $ 1.00
Common stock, shares authorized | 75,000,000 | 75,000,000
Common stock, shares issued | 54,363,741 | 54,190,201
Treasury stock, shares at cost | 835,651 | 452,952
Shares held by deferred compensation arrangements | 118,136 | 135,437

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