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Goodwill and Intangible Assets (Textual) (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Aug. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Oct. 31, 2016
Goodwill [Line Items]          
Goodwill, Period Increase (Decrease)     $ 242    
Goodwill and Intangible Assets (Textual) [Abstract]          
Goodwill through acquisition   $ 2,146      
Goodwill   13,823 11,810 $ 13,036  
Goodwill disposed of in connection with business divestiture   0 (1,422)    
Goodwill and Intangible Assets (Additional Textual) [Abstract]          
Amortization expense   1,832 2,458 3,500  
Projected amortization expense 2017   2,800      
Projected amortization expense 2018   2,600      
Projected amortization expense 2019   2,500      
Projected amortization expense 2020   2,200      
Projected amortization expense 2021   800      
Recovery Audit Services - Americas [Member]          
Goodwill [Line Items]          
Goodwill, Period Increase (Decrease)     0    
Goodwill and Intangible Assets (Textual) [Abstract]          
Goodwill through acquisition   0      
Goodwill   10,755 10,755 12,177  
Goodwill disposed of in connection with business divestiture $ (1,422) 0      
Recovery Audit Services - Europe/Asia-Pacific [Member]          
Goodwill [Line Items]          
Goodwill, Period Increase (Decrease)     0    
Goodwill and Intangible Assets (Textual) [Abstract]          
Goodwill through acquisition   0      
Goodwill   680 813 859  
Goodwill disposed of in connection with business divestiture   0 0    
Adjacent Services [Member]          
Goodwill [Line Items]          
Goodwill, Period Increase (Decrease)     242    
Goodwill and Intangible Assets (Textual) [Abstract]          
Goodwill through acquisition   2,146      
Goodwill   2,388 242 $ 0  
Goodwill disposed of in connection with business divestiture   0 0    
Supplier Information Management [Member] | Adjacent Services [Member]          
Goodwill [Line Items]          
Goodwill, Period Increase (Decrease)     $ 200    
Lavante [Member]          
Goodwill and Intangible Assets (Textual) [Abstract]          
Goodwill         $ 2,146
Lavante [Member] | Adjacent Services [Member]          
Goodwill [Line Items]          
Goodwill, Period Increase (Decrease)   $ 2,100