Fair Value Measurement and Fair Value of Financial Instruments - Schedule of Carrying Amounts of Assets that were Still Held and had Fair Value Adjustments Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Fair Value, Assets Measured on a Nonrecurring Basis
Affordable housing partnership, tax credit and CRA investments, net	$ 983,976	$ 969,492
Fair Value, Measurements, Nonrecurring
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	27,950	19,251
Loans held-for-sale	7,209
Affordable housing partnership, tax credit and CRA investments, net		953
OREO	2,668	13,035
Fair Value, Measurements, Nonrecurring | Commercial Lending | Commercial and industrial (“C&I”)
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	24,411	5,916
Fair Value, Measurements, Nonrecurring | Commercial Lending | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	3,539	13,335
Level 1 | Fair Value, Measurements, Nonrecurring
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	0	0
Loans held-for-sale	0
Affordable housing partnership, tax credit and CRA investments, net		0
OREO	0	0
Level 1 | Fair Value, Measurements, Nonrecurring | Commercial Lending | Commercial and industrial (“C&I”)
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	0	0
Level 1 | Fair Value, Measurements, Nonrecurring | Commercial Lending | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	0	0
Level 2 | Fair Value, Measurements, Nonrecurring
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	0	0
Loans held-for-sale	7,209
Affordable housing partnership, tax credit and CRA investments, net		0
OREO	0	0
Level 2 | Fair Value, Measurements, Nonrecurring | Commercial Lending | Commercial and industrial (“C&I”)
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	0	0
Level 2 | Fair Value, Measurements, Nonrecurring | Commercial Lending | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	0	0
Level 3 | Fair Value, Measurements, Nonrecurring
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	27,950	19,251
Loans held-for-sale	0
Affordable housing partnership, tax credit and CRA investments, net		953
OREO	2,668	13,035
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial Lending | Commercial and industrial (“C&I”)
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	24,411	5,916
Level 3 | Fair Value, Measurements, Nonrecurring | Commercial Lending | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Total loans held-for-investment	$ 3,539	$ 13,335