Fair Value Measurements and Fair Values of Financial Instruments, Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financial assets [Abstract]
HTM securities	$ 814,524	$ 812,647
Carrying Amount [Member] | Level 1 [Member]
Financial liabilities [Abstract]
Subordinated debt	120,380	98,000
Carrying Amount [Member] | Level 2 [Member]
Financial assets [Abstract]
HTM securities	905,267	919,517
Financial liabilities [Abstract]
Time deposits	1,324,709	433,772
Long-term debt	29,796	4,815
Junior subordinated debt	101,196	101,196
Carrying Amount [Member] | Level 3 [Member]
Financial assets [Abstract]
Net loans	9,539,684	8,049,909
Estimated Fair Value [Member] | Level 1 [Member]
Financial liabilities [Abstract]
Subordinated debt	113,757	92,883
Estimated Fair Value [Member] | Level 2 [Member]
Financial assets [Abstract]
HTM securities	814,524	812,647
Financial liabilities [Abstract]
Time deposits	1,285,999	413,868
Long-term debt	29,416	4,539
Junior subordinated debt	102,337	98,372
Estimated Fair Value [Member] | Level 3 [Member]
Financial assets [Abstract]
Net loans	$ 9,216,162	$ 7,840,350