Fair Value of Financial Instruments - Schedule of Estimated Fair Values and Carrying Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial assets:
Net loans held for investment	$ 9,450,442	$ 9,258,457
Interest receivable	49,611	52,715
Derivatives	$ 29,951	$ 34,738
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Financial liabilities:
Derivatives	$ 32,383	$ 38,215
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other liabilities	Accrued expenses and other liabilities
Carrying amount
Financial assets:
Cash and cash equivalents	$ 1,042,488	$ 810,932
Investment securities	1,538,008	1,471,973
Net loans held for investment	9,450,442	9,258,457
Loans held for sale, at fair value	95,403	46,618
Interest receivable	49,611	52,715
Mortgage servicing rights	162,038	164,249
Derivatives	29,951	34,738
Financial liabilities:
Without stated maturities	9,361,140	8,927,654
With stated maturities	1,849,294	1,620,633
Securities sold under agreements to repurchase and federal funds purchased	13,499	108,764
Bank Term Funding Program		130,000
Subordinated debt, net	130,704	129,645
Interest payable	24,182	18,809
Derivatives	32,383	38,215
Fair Value
Financial assets:
Cash and cash equivalents	1,042,488	810,932
Investment securities	1,538,008	1,471,973
Net loans held for investment	9,221,311	9,068,518
Loans held for sale, at fair value	95,403	46,618
Interest receivable	49,611	52,715
Mortgage servicing rights	162,038	164,249
Derivatives	29,951	34,738
Financial liabilities:
Without stated maturities	9,361,140	8,927,654
With stated maturities	1,846,989	1,614,400
Securities sold under agreements to repurchase and federal funds purchased	13,499	108,764
Bank Term Funding Program		130,000
Subordinated debt, net	126,684	122,671
Interest payable	24,182	18,809
Derivatives	32,383	38,215
Fair Value | Level 1
Financial assets:
Cash and cash equivalents	1,042,488	810,932
Investment securities	0	0
Net loans held for investment	0	0
Loans held for sale, at fair value	0	0
Interest receivable	629	388
Mortgage servicing rights	0	0
Derivatives	0	0
Financial liabilities:
Without stated maturities	9,361,140	8,927,654
With stated maturities	0	0
Securities sold under agreements to repurchase and federal funds purchased	13,499	108,764
Bank Term Funding Program		0
Subordinated debt, net	0	0
Interest payable	3,759	4,104
Derivatives	0	0
Fair Value | Level 2
Financial assets:
Cash and cash equivalents	0	0
Investment securities	1,538,008	1,471,973
Net loans held for investment	0	0
Loans held for sale, at fair value	95,403	46,618
Interest receivable	8,012	8,551
Mortgage servicing rights	0	0
Derivatives	29,951	34,738
Financial liabilities:
Without stated maturities	0	0
With stated maturities	1,846,989	1,614,400
Securities sold under agreements to repurchase and federal funds purchased	0	0
Bank Term Funding Program		130,000
Subordinated debt, net	0	0
Interest payable	18,923	13,205
Derivatives	32,383	38,215
Fair Value | Level 3
Financial assets:
Cash and cash equivalents	0	0
Investment securities	0	0
Net loans held for investment	9,221,311	9,068,518
Loans held for sale, at fair value	0	0
Interest receivable	40,970	43,776
Mortgage servicing rights	162,038	164,249
Derivatives	0	0
Financial liabilities:
Without stated maturities	0	0
With stated maturities	0	0
Securities sold under agreements to repurchase and federal funds purchased	0	0
Bank Term Funding Program		0
Subordinated debt, net	126,684	122,671
Interest payable	1,500	1,500
Derivatives	$ 0	$ 0