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Investment Securities - Amortized cost to Estimated Fair Value (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
segment
Jun. 30, 2021
USD ($)
segment
Dec. 31, 2021
USD ($)
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost   $ 244,355   $ 185,959
Unrealized Gains   2   661
Unrealized Losses   (17,848)   (2,165)
Fair Value   $ 226,509   184,455
Number of securities sold | segment   0 28  
Proceeds from sale of securities available for sale   $ 0 $ 66,534  
Realized gains on investment sales $ 694   694  
Realized loss on investment sales $ 541   $ 541  
U.S. Treasuries        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost   181,808   132,452
Unrealized Gains   0   45
Unrealized Losses   (13,159)   (1,496)
Fair Value   168,649   131,001
Municipal        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost   10,820   10,825
Unrealized Gains   0   43
Unrealized Losses   (2,378)   (394)
Fair Value   8,442   10,474
Corporate        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost   5,000   5,000
Unrealized Gains   0   0
Unrealized Losses   (241)   (66)
Fair Value   4,759   4,934
Asset-backed securities        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost   9,606   10,093
Unrealized Gains   0   59
Unrealized Losses   (191)   (12)
Fair Value   9,415   10,140
Mortgage-backed securities        
Debt Securities, Available-for-sale [Line Items]        
Amortized Cost   37,121   27,589
Unrealized Gains   2   514
Unrealized Losses   (1,879)   (197)
Fair Value   $ 35,244   $ 27,906