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Business Segments and Geographic Information - Summary of Assets by Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Total assets | $ 102,046 | $ 90,584 | $ 92,584
Capital Expenditures | 298 | 1,014 | 771
Depreciation & Amortization | 3,589 | 3,434 | 3,182
Data and analytics services [Member] |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Total assets | 55,792 | 41,527 | 43,182
Capital Expenditures | 193 | 203 | 175
Depreciation & Amortization | 2,245 | 2,078 | 2,051
IT Staffing Services [Member] |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |
Total assets | 46,254 | 49,057 | 49,402
Capital Expenditures | 105 | 811 | 596
Depreciation & Amortization | $ 1,344 | $ 1,356 | $ 1,131

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