Fair Value - Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financial Assets
Held-to-maturity debt securities	$ 624,650	$ 635,186
Time deposits with other banks	1,494	3,215
Loans, net	10,302,754	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	1,444	3,194
Loans, net	0	0
Financial Liabilities
Deposits	0	0
FHLB borrowings	463,106	243,795
Long-term debt	96,944	95,563
Significant Unobservable Inputs (Level 3)
Financial Assets
Time deposits with other banks	0	0
Loans, net	10,176,542	10,019,964
Financial Liabilities
Deposits	12,573,285	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
Held-to-maturity debt securities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Held-to-maturity debt securities	509,751	507,594
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Held-to-maturity debt securities	0	0
Carrying Value
Financial Assets
Time deposits with other banks	1,494	3,215
Loans, net	10,300,804	10,160,056
Financial Liabilities
Deposits	12,574,796	12,242,427
FHLB borrowings	465,000	245,000
Long-term debt	107,132	106,966
Carrying Value | Fair Value, Measurements, Recurring
Financial Assets
Held-to-maturity debt securities	$ 624,650	$ 635,186