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Securities - Schedule of Credit Quality Indicators of Held-To-Maturity Securities at Amortized Cost (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | $ 1,904,439 | $ 1,945,795
U.S. Treasury and federal agencies |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 284,114 | 287,259
State and municipal |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 1,064,638 | 1,088,499
Federal agency collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 48,668 | 51,325
Federal agency mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 314,069 | 323,649
Private labeled mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 30,780 | 32,329
Corporate notes |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 162,170 | 162,734
AAA |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 678,366 | 693,051
AAA | U.S. Treasury and federal agencies |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
AAA | State and municipal |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 284,849 | 285,748
AAA | Federal agency collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 48,668 | 51,325
AAA | Federal agency mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 314,069 | 323,649
AAA | Private labeled mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 30,780 | 32,329
AAA | Corporate notes |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
AA |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 1,004,141 | 1,022,426
AA | U.S. Treasury and federal agencies |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 284,114 | 287,259
AA | State and municipal |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 713,834 | 730,907
AA | Federal agency collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
AA | Federal agency mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
AA | Private labeled mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
AA | Corporate notes |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 6,193 | 4,260
A |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 75,463 | 81,489
A | U.S. Treasury and federal agencies |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
A | State and municipal |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 63,772 | 69,658
A | Federal agency collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
A | Federal agency mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
A | Private labeled mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
A | Corporate notes |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 11,691 | 11,831
BBB |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 78,109 | 80,383
BBB | U.S. Treasury and federal agencies |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BBB | State and municipal |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 2,183 | 2,186
BBB | Federal agency collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BBB | Federal agency mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BBB | Private labeled mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BBB | Corporate notes |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 75,926 | 78,197
BB |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 4,550 | 4,556
BB | U.S. Treasury and federal agencies |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BB | State and municipal |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BB | Federal agency collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BB | Federal agency mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BB | Private labeled mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
BB | Corporate notes |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 4,550 | 4,556
Not Rated |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 63,810 | 63,890
Not Rated | U.S. Treasury and federal agencies |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
Not Rated | State and municipal |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
Not Rated | Federal agency collateralized mortgage obligations |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
Not Rated | Federal agency mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
Not Rated | Private labeled mortgage-backed pools |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | 0 | 0
Not Rated | Corporate notes |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Total | $ 63,810 | $ 63,890

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