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Significant Accounting and Reporting Policies - Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 116,879  
Property and equipment, gross   $ 116,691
Less accumulated depreciation (85,454)  
Less accumulated depreciation   (82,388)
Net property and equipment 31,425  
Net Property and Equipment   34,303
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 331  
Property and equipment, gross   316
Buildings and improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 28,840  
Property and equipment, gross   28,957
Buildings and improvements | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 7 years  
Buildings and improvements | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 40 years  
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 29,898  
Property and equipment, gross   33,401
Furniture and fixtures | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Furniture and fixtures | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 10 years  
Data processing equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 57,574  
Property and equipment, gross   53,790
Data processing equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Data processing equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 5 years  
Automobiles    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 236  
Property and equipment, gross   $ 227
Automobiles | Minimum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Automobiles | Maximum    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 4 years