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UNAUDITED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Statement of Financial Position [Abstract] |  |
Trading securities, amortized cost | $ 163 | $ 162
Investment securities available-for-sale, amortized cost | 1,217,883 | 503,421
Investment securities available-for-sale, allowance for credit loss | 0 | 0
Investment securities held-to-maturity, fair value | 501,747 | 363,653
Investment securities held-to-maturity, allowance for credit loss | 0 | 0
Loans held for investment, allowance for credit losses | $ 159,039 | $ 155,937
Common stock, par value (in dollars per share) | $ 1 | $ 1
Common stock, authorized (in shares) | 100,000,000 | 100,000,000
Common stock, issued (in shares) | 59,885,234 | 59,885,234
Common stock, outstanding (in shares) | 47,553,723 | 49,636,352
Treasury stock, at cost (in shares) | 12,331,511 | 10,248,882
Accumulated other comprehensive income, tax (benefit) expense | $ (8,646) | $ 1,328

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