Quarterly report pursuant to Section 13 or 15(d)

Loans, Net - Summary of Loans (Details)

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Loans, Net - Summary of Loans (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]        
Total loans held in portfolio [1] $ 882,101 $ 869,119    
Allowance for loan losses (5,727) (5,652) $ (4,550) $ (4,357)
Loans, net 876,374 863,467    
Commercial and Industrial Loans        
Accounts Notes And Loans Receivable [Line Items]        
Total loans held in portfolio [2] 137,400 135,040    
Consumer Loans and Leases        
Accounts Notes And Loans Receivable [Line Items]        
Total loans held in portfolio 20,824 22,736    
Municipal and Other Loans        
Accounts Notes And Loans Receivable [Line Items]        
Total loans held in portfolio 52,278 53,632    
Real Estate | 1-4 Single Family Residential Loans        
Accounts Notes And Loans Receivable [Line Items]        
Total loans held in portfolio 238,382 232,510    
Real Estate | Construction, Land and Development        
Accounts Notes And Loans Receivable [Line Items]        
Total loans held in portfolio 143,646 139,470    
Real Estate | Commercial Real Estate Loans (Including Multifamily)        
Accounts Notes And Loans Receivable [Line Items]        
Total loans held in portfolio $ 289,571 $ 285,731    
[1] Balance includes $(3.5) million and $(3.4) million of deferred fees, cost, premium and discount as of March 31, 2018 and December 31, 2017, respectively.
[2] Balance includes $70.1 million and $67.1 million of the unguaranteed portion of SBA loans as of March 31, 2018 and December 31, 2017, respectively.