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Shareholders' Equity - Schedule of Minimum Required Capital Amounts and Ratios for Well Capitalized Institutions and The Actual Capital Amounts and Ratios for The Company and The Bank (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts [Line Items] |  |  |  |
Common Shareholders’ Equity | $ 1,414,242 | $ 1,316,995 | $ 1,611,611 | $ 1,374,507
Well Capitalized Minimum Common Equity Tier One Ratio (as a percent) | 6.50% | 6.50% |  |
Well Capitalized Minimum Tier 1 Capital Ratio (as a percent) | 0.080 | 0.080 |  |
Well Capitalized Minimum Total Capital Ratio (as a percent) | 0.100 | 0.100 |  |
Well Capitalized Minimum Tier 1 Leverage Ratio (as a percent) | 0.050 | 0.050 |  |
Parent [Member] |  |  |  |
Minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts [Line Items] |  |  |  |
Common Shareholders’ Equity | $ 1,238,756 | $ 1,141,507 |  |
Common Equity Tier One Capital | 1,611,645 | 1,554,741 |  |
Tier 1 Capital | 1,787,132 | 1,730,228 |  |
Total Capital | $ 1,935,532 | $ 1,875,430 |  |
Common Equity Tier One Capital Ratio | 11.33% | 10.92% |  |
Tier 1 Capital Ratio (as a percent) | 0.1256 | 0.1215 |  |
Total Capital Ratio (as a percent) | 0.1360 | 0.1317 |  |
Tier 1 Leverage Ratio (as a percent) | 0.0751 | 0.0737 |  |
Subsidiaries [Member] |  |  |  |
Minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts [Line Items] |  |  |  |
Common Shareholders’ Equity | $ 1,369,733 | $ 1,279,736 |  |
Common Equity Tier One Capital | 1,754,222 | 1,704,570 |  |
Tier 1 Capital | 1,754,222 | 1,704,570 |  |
Total Capital | $ 1,902,622 | $ 1,849,772 |  |
Common Equity Tier One Capital Ratio | 12.33% | 11.98% |  |
Tier 1 Capital Ratio (as a percent) | 0.1233 | 0.1198 |  |
Total Capital Ratio (as a percent) | 0.1338 | 0.1300 |  |
Tier 1 Leverage Ratio (as a percent) | 0.0738 | 0.0727 |  |

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