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Fair Value Measurement - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value $ 1,369,368 $ 1,454,542    
Equity and other securities, at fair value 10,677 10,578    
Servicing assets, at fair value 24,497 23,744 $ 22,140 $ 22,042
Derivative assets 29,113 13,375    
Derivative liabilities 7,475 9,665    
U.S. Treasury Notes        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 24,225 18,476    
U.S. Government Agencies        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 140,240 139,390    
Obligations of States, Municipalities, and Political Subdivisions        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 82,128 89,636    
Corporate Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 65,142 67,346    
Asset-Backed Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 36,659 37,251    
Fair Value, Measurements, Recurring        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Servicing assets, at fair value 24,497 23,744    
Derivative assets 29,113 13,375    
Derivative liabilities 7,475 9,665    
Fair Value, Measurements, Recurring | U.S. Treasury Notes        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 24,225 18,476    
Fair Value, Measurements, Recurring | U.S. Government Agencies        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 140,240 139,390    
Fair Value, Measurements, Recurring | Obligations of States, Municipalities, and Political Subdivisions        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 82,128 89,636    
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Residential | Agency        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 700,857 743,656    
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Residential | Non-Agency        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 130,424 145,236    
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Commercial | Agency        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 189,693 213,551    
Fair Value, Measurements, Recurring | Corporate Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 65,142 67,346    
Fair Value, Measurements, Recurring | Asset-Backed Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 36,659 37,251    
Fair Value, Measurements, Recurring | Mutual Funds        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Equity and other securities, at fair value 4,872 4,880    
Fair Value, Measurements, Recurring | Equity Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Equity and other securities, at fair value 5,805 5,698    
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury Notes        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 24,225 18,476    
Fair Value, Measurements, Recurring | Level 1 | Mutual Funds        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Equity and other securities, at fair value 4,872 4,880    
Fair Value, Measurements, Recurring | Level 2        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Derivative assets 29,113 13,375    
Derivative liabilities 7,475 9,665    
Fair Value, Measurements, Recurring | Level 2 | U.S. Government Agencies        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 140,240 139,390    
Fair Value, Measurements, Recurring | Level 2 | Obligations of States, Municipalities, and Political Subdivisions        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 82,128 89,636    
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Residential | Agency        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 700,857 743,656    
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Residential | Non-Agency        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 130,424 145,236    
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Commercial | Agency        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 189,693 213,551    
Fair Value, Measurements, Recurring | Level 2 | Corporate Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 65,142 67,346    
Fair Value, Measurements, Recurring | Level 2 | Asset-Backed Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Securities available-for-sale, at fair value 36,659 37,251    
Fair Value, Measurements, Recurring | Level 2 | Equity Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Equity and other securities, at fair value 5,130 5,012    
Fair Value, Measurements, Recurring | Level 3        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Servicing assets, at fair value 24,497 23,744    
Fair Value, Measurements, Recurring | Level 3 | Equity Securities        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]        
Equity and other securities, at fair value $ 675 $ 686