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Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 20,988 $ 19,413
Less accumulated depreciation (10,684) (9,240)
Property and equipment, net $ 10,304 10,173
Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 3 years  
Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 25 years  
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 1,413 1,123
Office buildings and improvements (25 years)    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 4,492 4,406
Property and equipment useful life 25 years  
Office buildings and improvements (25 years) | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 3 years  
Office buildings and improvements (25 years) | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 25 years  
Furniture, fixtures and equipment (3 to 10 years)    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 14,148 12,993
Furniture, fixtures and equipment (3 to 10 years) | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 3 years  
Furniture, fixtures and equipment (3 to 10 years) | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment useful life 10 years  
Automobiles (3 years)    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 935 $ 891
Property and equipment useful life 3 years