Fair Value of Financial Instruments - Schedule of Balances and Levels of Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financial assets:
AFS debt securities:	$ 1,580,720	$ 1,538,008
Mortgage-backed securities - residential
Financial assets:
AFS debt securities:	816,556	810,999
Mortgage-backed securities - commercial
Financial assets:
AFS debt securities:	14,828	14,857
Municipal securities
Financial assets:
AFS debt securities:	145,396	147,857
U.S. Treasury securities
Financial assets:
AFS debt securities:		299
Corporate securities
Financial assets:
AFS debt securities:	998	989
Recurring Basis
Financial assets:
Total securities	1,580,720	1,538,008
Loans held for sale, at fair value	145,618	95,403
Mortgage servicing rights	156,379	162,038
Derivatives	26,150	29,951
Financial liabilities:
Derivatives	24,621	32,383
Recurring Basis | U.S. government agency securities
Financial assets:
AFS debt securities:	602,942	563,007
Recurring Basis | Mortgage-backed securities - residential
Financial assets:
AFS debt securities:	816,556	810,999
Recurring Basis | Mortgage-backed securities - commercial
Financial assets:
AFS debt securities:	14,828	14,857
Recurring Basis | Municipal securities
Financial assets:
AFS debt securities:	145,396	147,857
Recurring Basis | U.S. Treasury securities
Financial assets:
AFS debt securities:		299
Recurring Basis | Corporate securities
Financial assets:
AFS debt securities:	998	989
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1)
Financial assets:
Total securities	0	0
Loans held for sale, at fair value	0	0
Mortgage servicing rights	0	0
Derivatives	0	0
Financial liabilities:
Derivatives	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | U.S. government agency securities
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | Mortgage-backed securities - residential
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | Mortgage-backed securities - commercial
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | Municipal securities
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | U.S. Treasury securities
Financial assets:
AFS debt securities:		0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | Corporate securities
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Significant other observable inputs (level 2)
Financial assets:
Total securities	1,580,720	1,538,008
Loans held for sale, at fair value	145,618	95,403
Mortgage servicing rights	0	0
Derivatives	26,150	29,951
Financial liabilities:
Derivatives	24,621	32,383
Recurring Basis | Significant other observable inputs (level 2) | U.S. government agency securities
Financial assets:
AFS debt securities:	602,942	563,007
Recurring Basis | Significant other observable inputs (level 2) | Mortgage-backed securities - residential
Financial assets:
AFS debt securities:	816,556	810,999
Recurring Basis | Significant other observable inputs (level 2) | Mortgage-backed securities - commercial
Financial assets:
AFS debt securities:	14,828	14,857
Recurring Basis | Significant other observable inputs (level 2) | Municipal securities
Financial assets:
AFS debt securities:	145,396	147,857
Recurring Basis | Significant other observable inputs (level 2) | U.S. Treasury securities
Financial assets:
AFS debt securities:		299
Recurring Basis | Significant other observable inputs (level 2) | Corporate securities
Financial assets:
AFS debt securities:	998	989
Recurring Basis | Significant unobservable inputs (level 3)
Financial assets:
Total securities	0	0
Loans held for sale, at fair value	0	0
Mortgage servicing rights	156,379	162,038
Derivatives	0	0
Financial liabilities:
Derivatives	0	0
Recurring Basis | Significant unobservable inputs (level 3) | U.S. government agency securities
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | Mortgage-backed securities - residential
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | Mortgage-backed securities - commercial
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | Municipal securities
Financial assets:
AFS debt securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | U.S. Treasury securities
Financial assets:
AFS debt securities:		0
Recurring Basis | Significant unobservable inputs (level 3) | Corporate securities
Financial assets:
AFS debt securities:	$ 0	$ 0