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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