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Goodwill and Other Intangible Assets, net - Reconciliation of Goodwill (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Beginning balance $ 26,106    
Impairment   $ 9,738  
Ending balance 26,106 26,106  
IT Staffing Services [Member]      
Beginning balance 8,427 8,427 $ 8,427
Goodwill recorded 0    
Impairment 0    
Ending balance 8,427 8,427 8,427
Data and Analytics Services [Member]      
Beginning balance 17,679 27,417  
Goodwill recorded     27,417
Impairment   (9,738)  
Ending balance $ 17,679 $ 17,679 $ 27,417