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2. Investment Securities (Details 3) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Estimated fair value $ 245,249 $ 195,746
Mortgage-backed securities    
Estimated fair value 145,314 78,956
Level 1 valuation 0 0
Level 2 valuation 145,314 78,956
Level 3 valuation 0 0
U.S. Government sponsored enterprises    
Estimated fair value 7,507 28,397
Level 1 valuation 0 0
Level 2 valuation 7,507 28,397
Level 3 valuation 0 0
State and political subdivisions    
Estimated fair value 92,428 88,143
Level 1 valuation 0 0
Level 2 valuation 92,248 88,143
Level 3 valuation 0 0
Trust preferred securities    
Estimated fair value 0 250
Level 1 valuation 0 0
Level 2 valuation 0 250
Level 3 valuation $ 0 $ 0