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Investment Securities - Continuous Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Fair Value    
Less Than 12 Months $ 170,447 $ 38,116
12 Months or Greater 4,005 3,949
Fair Value 174,452 42,065
Gross Unrealized Losses    
Less Than 12 Months (3,254) (143)
12 Months or Greater (216) (271)
Total (3,470) (414)
U.S. agency    
Fair Value    
Less Than 12 Months 8,662  
12 Months or Greater 0  
Fair Value 8,662  
Gross Unrealized Losses    
Less Than 12 Months (70)  
12 Months or Greater 0  
Total (70)  
State, county & municipal securities    
Fair Value    
Less Than 12 Months 47,942 8,282
12 Months or Greater 0 0
Fair Value 47,942 8,282
Gross Unrealized Losses    
Less Than 12 Months (1,073) (65)
12 Months or Greater 0 0
Total (1,073) (65)
Corporate debt securities    
Fair Value    
Less Than 12 Months 1,728 999
12 Months or Greater 0 0
Fair Value 1,728 999
Gross Unrealized Losses    
Less Than 12 Months (22) (1)
12 Months or Greater 0 0
Total (22) (1)
Mortgage-backed securities    
Fair Value    
Less Than 12 Months 120,777 28,835
12 Months or Greater 4,005 3,949
Fair Value 124,782 32,784
Gross Unrealized Losses    
Less Than 12 Months (2,159) (77)
12 Months or Greater (216) (271)
Total $ (2,375) $ (348)