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Investment Securities - Aggregated by Major Security Type and Length of Time in a Continuous Unrealized Loss Position (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
security
Dec. 31, 2021
USD ($)
Fair Value    
Less than 12 Months, Fair value $ 175,695 $ 144,097
12 Months or More, Fair Value 140,408 11,345
Available for sale, Continuous unrealized loss position, Fair Value 316,103 155,442
Unrealized Losses    
Less than 12 Months, Unrealized Losses (6,147) (1,607)
12 Months or More, Unrealized Losses (20,805) (359)
Available for sale, Continuous unrealized loss position, Unrealized Losses $ (26,952) (1,966)
Number of debt securities in portfolio | security 33  
Number of debt securities in an unrealized loss position | security 30  
U.S. Treasury and Agency securities    
Fair Value    
Less than 12 Months, Fair value $ 100,815 49,865
12 Months or More, Fair Value 44,605  
Available for sale, Continuous unrealized loss position, Fair Value 145,420 49,865
Unrealized Losses    
Less than 12 Months, Unrealized Losses (2,839) (229)
12 Months or More, Unrealized Losses (4,619)  
Available for sale, Continuous unrealized loss position, Unrealized Losses (7,458) (229)
Mortgage-backed securities    
Fair Value    
Less than 12 Months, Fair value 5,792 7,878
12 Months or More, Fair Value 30,941 8,729
Available for sale, Continuous unrealized loss position, Fair Value 36,733 16,607
Unrealized Losses    
Less than 12 Months, Unrealized Losses (139) (36)
12 Months or More, Unrealized Losses (4,516) (350)
Available for sale, Continuous unrealized loss position, Unrealized Losses (4,655) (386)
Collateralized mortgage obligations    
Fair Value    
Less than 12 Months, Fair value 69,088 86,354
12 Months or More, Fair Value 64,715 2,413
Available for sale, Continuous unrealized loss position, Fair Value 133,803 88,767
Unrealized Losses    
Less than 12 Months, Unrealized Losses (3,169) (1,342)
12 Months or More, Unrealized Losses (11,660) (1)
Available for sale, Continuous unrealized loss position, Unrealized Losses (14,829) (1,343)
Collateralized debt obligations    
Fair Value    
12 Months or More, Fair Value 147 203
Available for sale, Continuous unrealized loss position, Fair Value 147 203
Unrealized Losses    
12 Months or More, Unrealized Losses (10) (8)
Available for sale, Continuous unrealized loss position, Unrealized Losses $ (10) $ (8)