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Loans Receivable (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Loans Receivable [Line Items]    
Loans receivable $ 94,613 $ 97,073
Valuation allowance, Specific 165 1,200
Valuation allowance, General 1,981 2,183
Valuation allowance 2,146 3,383
Decrease in valuation allowance (1,237) 0
Loans in nonaccrual status $ 200 1,200
Maturity period 10 years  
Real Estate    
Loans Receivable [Line Items]    
Loans receivable $ 58,541 62,289
Loans receivable 59,853 63,047
Commercial    
Loans Receivable [Line Items]    
Loans receivable 33,258 32,524
Loans receivable 34,760 34,026
Loans Receivable    
Loans Receivable [Line Items]    
Loans receivable $ 91,799 $ 94,813