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Revenue from Contracts with Customers - Summary of Disaggregation of Our Revenues by Contract Type and Operating Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Disaggregation of Revenue [Line Items]        
Revenues by contract type and operating segment $ 52,204 $ 62,117 $ 107,267 $ 121,872
Data and Analytics Services [Member]        
Disaggregation of Revenue [Line Items]        
Revenues by contract type and operating segment 8,773 11,250 18,168 21,402
Data and Analytics Services [Member] | Time-and-Material Contract [Member]        
Disaggregation of Revenue [Line Items]        
Revenues by contract type and operating segment 6,438 6,863 13,139 13,044
Data and Analytics Services [Member] | Fixed-Price Contract [Member]        
Disaggregation of Revenue [Line Items]        
Revenues by contract type and operating segment 2,335 4,387 5,029 8,358
IT Staffing Services [Member]        
Disaggregation of Revenue [Line Items]        
Revenues by contract type and operating segment 43,431 50,867 89,099 100,470
IT Staffing Services [Member] | Time-and-Material Contract [Member]        
Disaggregation of Revenue [Line Items]        
Revenues by contract type and operating segment 43,431 50,867 89,099 100,470
IT Staffing Services [Member] | Fixed-Price Contract [Member]        
Disaggregation of Revenue [Line Items]        
Revenues by contract type and operating segment $ 0 $ 0 $ 0 $ 0