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Consolidated Balance Sheets - (Unaudited) (Parenthetical) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
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Statement of Financial Position [Abstract] |  |
Investment securities available for sale, amortized cost | $ 1,370,927 | $ 1,129,057
Investment securities available for sale, allowance for credit losses | (78) | (167)
Time deposits | $ 100 | $ 100
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, authorized (in shares) | 100,000,000 | 100,000,000
Common stock, issued (in shares) | 31,960,379 | 31,779,663
Common stock, outstanding (in shares) | 31,960,379 | 31,779,663

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