Fair Value - Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financial Assets
HTM debt securities	$ 598,604	$ 635,186
Time deposits with other banks	30,852	3,215
Loans, net	10,816,720	10,161,895
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Time deposits with other banks	0	0
Loans, net	0	0
Financial Liabilities
Deposits	0	0
FHLB borrowings	0	0
Long-term debt	0	0
Significant Other Observable Inputs (Level 2)
Financial Assets
Time deposits with other banks	30,893	3,194
Loans, net	0	0
Financial Liabilities
Deposits	0	0
FHLB borrowings	688,206	243,795
Long-term debt	100,606	95,563
Significant Unobservable Inputs (Level 3)
Financial Assets
Time deposits with other banks	0	0
Loans, net	10,648,107	10,019,964
Financial Liabilities
Deposits	13,090,137	12,242,205
FHLB borrowings	0	0
Long-term debt	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
HTM debt securities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
HTM debt securities	498,384	507,594
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
HTM debt securities	0	0
Carrying Value
Financial Assets
Time deposits with other banks	30,852	3,215
Loans, net	10,815,824	10,160,056
Financial Liabilities
Deposits	13,090,319	12,242,427
FHLB borrowings	690,000	245,000
Long-term debt	107,464	106,966
Carrying Value | Fair Value, Measurements, Recurring
Financial Assets
HTM debt securities	$ 598,604	$ 635,186