Fair Value - Schedule of Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Financial Assets
HTM debt securities	$ 552,982	$ 586,178
Time deposits with other banks	498	14,424
Loans, net	13,382,856	12,449,181
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
HTM debt securities	0	0
Time deposits with other banks		0
Loans, net	0	0
Financial Liabilities
Deposits	0	0
FHLB and other borrowings	0	0
Subordinated debt	0	0
Significant Other Observable Inputs (Level 2)
Financial Assets
HTM debt securities	435,311	489,560
Time deposits with other banks		13,455
Loans, net	147,248	0
Financial Liabilities
Deposits	0	0
FHLB and other borrowings	984,948	833,483
Subordinated debt	94,099	90,248
Significant Unobservable Inputs (Level 3)
Financial Assets
HTM debt securities	0	0
Time deposits with other banks		0
Loans, net	12,837,275	12,263,824
Financial Liabilities
Deposits	16,580,540	16,257,291
FHLB and other borrowings	0	0
Subordinated debt	0	0
Carrying Value
Financial Assets
HTM debt securities	552,982	586,178
Time deposits with other banks		14,424
Loans, net	13,382,856	12,449,181
Financial Liabilities
Deposits	16,580,159	16,256,343
FHLB and other borrowings	985,000	835,000
Subordinated debt	$ 95,693	$ 95,161