Fair Value of Financial Instruments - Balances and Levels of Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial assets:
Available-for-sale securities:	$ 1,471,186	$ 1,678,525
Equity securities, at fair value	2,990	3,367
Derivatives	48,769	27,384
Financial liabilities:
Derivatives	63,229	21,000
Mortgage-backed securities - residential
Financial assets:
Available-for-sale securities:	1,034,193	1,269,372
Mortgage-backed securities - commercial
Financial assets:
Available-for-sale securities:	17,644	15,250
Municipal securities
Financial assets:
Available-for-sale securities:	264,420	338,610
U.S. Treasury securities
Financial assets:
Available-for-sale securities:	107,680	14,908
Corporate securities
Financial assets:
Available-for-sale securities:	7,187	6,515
Recurring Basis
Financial assets:
Equity securities, at fair value	2,990	3,367
Total securities	1,474,176	1,681,892
Loans held for sale, at fair value	87,029	752,223
Mortgage servicing rights	168,365	115,512
Derivatives	48,769	27,384
Financial liabilities:
Derivatives	63,229	21,000
Recurring Basis | U.S. government agency securities
Financial assets:
Available-for-sale securities:	40,062	33,870
Recurring Basis | Mortgage-backed securities - residential
Financial assets:
Available-for-sale securities:	1,034,193	1,269,372
Recurring Basis | Mortgage-backed securities - commercial
Financial assets:
Available-for-sale securities:	17,644	15,250
Recurring Basis | Municipal securities
Financial assets:
Available-for-sale securities:	264,420	338,610
Recurring Basis | U.S. Treasury securities
Financial assets:
Available-for-sale securities:	107,680	14,908
Recurring Basis | Corporate securities
Financial assets:
Available-for-sale securities:	7,187	6,515
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1)
Financial assets:
Equity securities, at fair value	0	0
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:
Available-for-sale securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | Mortgage-backed securities - residential
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | Mortgage-backed securities - commercial
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | Municipal securities
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | U.S. Treasury securities
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Quoted prices in active markets for identical assets (liabilities) (level 1) | Corporate securities
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Significant other observable inputs (level 2)
Financial assets:
Equity securities, at fair value	2,990	3,367
Total securities	1,474,176	1,681,892
Loans held for sale, at fair value	56,539	672,924
Mortgage servicing rights	0	0
Derivatives	48,769	27,384
Financial liabilities:
Derivatives	63,229	21,000
Recurring Basis | Significant other observable inputs (level 2) | U.S. government agency securities
Financial assets:
Available-for-sale securities:	40,062	33,870
Recurring Basis | Significant other observable inputs (level 2) | Mortgage-backed securities - residential
Financial assets:
Available-for-sale securities:	1,034,193	1,269,372
Recurring Basis | Significant other observable inputs (level 2) | Mortgage-backed securities - commercial
Financial assets:
Available-for-sale securities:	17,644	15,250
Recurring Basis | Significant other observable inputs (level 2) | Municipal securities
Financial assets:
Available-for-sale securities:	264,420	338,610
Recurring Basis | Significant other observable inputs (level 2) | U.S. Treasury securities
Financial assets:
Available-for-sale securities:	107,680	14,908
Recurring Basis | Significant other observable inputs (level 2) | Corporate securities
Financial assets:
Available-for-sale securities:	7,187	6,515
Recurring Basis | Significant unobservable inputs (level 3)
Financial assets:
Equity securities, at fair value	0	0
Total securities	0	0
Loans held for sale, at fair value	30,490	79,299
Mortgage servicing rights	168,365	115,512
Derivatives	0	0
Financial liabilities:
Derivatives	0	0
Recurring Basis | Significant unobservable inputs (level 3) | U.S. government agency securities
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | Mortgage-backed securities - residential
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | Mortgage-backed securities - commercial
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | Municipal securities
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | U.S. Treasury securities
Financial assets:
Available-for-sale securities:	0	0
Recurring Basis | Significant unobservable inputs (level 3) | Corporate securities
Financial assets:
Available-for-sale securities:	$ 0	$ 0