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3. Loans (Details 4) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Mortgage loans held for sale $ 9,139 $ 4,417
Impaired loans 20,369 20,347
Other real estate 128 0
Level 1    
Mortgage loans held for sale 0 0
Impaired loans 0 0
Other real estate 0 0
Level 2    
Mortgage loans held for sale 0 0
Impaired loans 0 0
Other real estate 0 0
Level 3    
Mortgage loans held for sale 9,139 4,417
Impaired loans 20,369 20,347
Other real estate $ 128 $ 0