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Common Stock (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
May 14, 2019
May 13, 2019
Jun. 25, 2014
May 06, 2014
Class of Stock [Line Items]              
Common stock, shares authorized 20,000,000 10,000,000   20,000,000 10,000,000    
Employee [Member]              
Class of Stock [Line Items]              
Restricted shares, vesting period 4 years            
Director [Member]              
Class of Stock [Line Items]              
Restricted shares, vesting period 12 months            
Dividend Reinvestment Plan [Member]              
Class of Stock [Line Items]              
Shares authorized per plan 330,750            
2014 Restricted Stock Plan [Member]              
Class of Stock [Line Items]              
Shares authorized per plan           100,000 100,000
Shares granted, net 57,655            
Shares forfeited and available for reissuance 2,346            
Shares granted 18,450 12,250 10,440        
Shares forfeited 0 1,876 0        
Unrecognized compensation cost related to all non-vested share-based compensation awards $ 630,000            
Weighted average recognition period 2 years 10 months 24 days            
2014 Restricted Stock Plan [Member] | Employee [Member]              
Class of Stock [Line Items]              
Shares granted 11,650 7,450 6,040        
2014 Restricted Stock Plan [Member] | Director [Member]              
Class of Stock [Line Items]              
Shares granted 6,800 4,800 4,400