Annual report pursuant to Section 13 and 15(d)

Property and Equipment (Details)

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Property and Equipment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 30,258 $ 27,480  
Less - accumulated depreciation (25,240) (22,152)  
Property and equipment, net 5,018 5,328  
Depreciation of property and equipment 3,020 3,263 $ 3,044
Furniture and office equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 5,429 5,120  
Computer equipment and software costs      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 19,475 18,024  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 2,819 2,690  
Automobiles      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 1,156 1,126  
Land      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 1,379 $ 520