XML 124 R129.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Related Party Transactions - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Transaction
Dec. 31, 2018
USD ($)
Related Party Transaction [Line Items]    
Number of loan transactions | Transaction 2  
Total deposits from related parties $ 4.9 $ 5.4
Loans    
Related Party Transaction [Line Items]    
Maximum loan capacity 0.5  
Due from Officers or Stockholders 1.0 $ 1.2
New Loans and Credit Line Advance to Related Parties    
Related Party Transaction [Line Items]    
New loans and credit line advance to related parties 1.1  
Repayments 1.3  
Executive Officer | Loans    
Related Party Transaction [Line Items]    
Maximum loan capacity $ 0.5