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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) | Sep. 30, 2022 | Dec. 31, 2021
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Statement of Financial Position [Abstract] |  |
Debt securities, available-for-sale, amortized cost | $ 443,516,000 | $ 698,085,000
Debt securities held-to-maturity | $ 369,102,000 | $ 0
Preferred stock, par value (in dollars per share) | $ 0 | $ 0
Preferred stock, liquidation preference | $ 1,000 | $ 1,000
Preferred stock, shares authorized (in shares) | 60,375 | 60,375
Preferred stock, shares issued (in shares) | 60,375 | 60,375
Common stock, shares authorized (in shares) | 50,000,000 | 50,000,000
Common stock, shares issued (in shares) | 21,235,503 | 21,235,503
Common stock, shares outstanding (in shares) | 16,978,057 | 16,978,057
Treasury stock, shares (in shares) | 114,919 | 122,995

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