Premises and Equipment (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Property, Plant and Equipment      
Property, plant and equipment, gross $ 25,881,000 $ 24,109,000  
Less accumulated depreciation and amortization (8,174,000) (7,375,000)  
Property, plant and equipment, net 17,707,000 16,734,000  
Depreciation of premises and equipment 809,000 755,000 $ 799,000
Land      
Property, Plant and Equipment      
Property, plant and equipment, gross 1,914,000 1,914,000  
Buildings and improvements      
Property, Plant and Equipment      
Property, plant and equipment, gross 17,820,000 17,820,000  
Leasehold Improvements [Member]      
Property, Plant and Equipment      
Property, plant and equipment, gross 391,000    
Furniture, fixtures and equipment      
Property, Plant and Equipment      
Property, plant and equipment, gross 3,638,000 3,399,000  
Computer Equipment [Member]      
Property, Plant and Equipment      
Property, plant and equipment, gross 1,883,000 969,000  
Construction in Progress [Member]      
Property, Plant and Equipment      
Property, plant and equipment, gross $ 235,000 $ 7,000