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Business Segments - Business Segment Information Based on Net Revenues and Operating Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Revenues, net: |  |  |  |
Revenues, net | $ 62,450 | $ 59,925 | $ 191,417 | $ 171,791
Operating income from continuing operations: |  |  |  |
Operating income from continuing operations | 3,748 | 4,661 | 11,384 | 12,654
Workforce Solutions [Member] |  |  |  |
Revenues, net: |  |  |  |
Revenues, net | 51,023 | 49,128 | 157,739 | 141,043
Provider Solutions [Member] |  |  |  |
Revenues, net: |  |  |  |
Revenues, net | 11,427 | 10,797 | 33,678 | 30,748
Operating Segments [Member] | Workforce Solutions [Member] |  |  |  |
Revenues, net: |  |  |  |
Revenues, net | 51,023 | 49,128 | 157,739 | 141,043
Operating income from continuing operations: |  |  |  |
Operating income from continuing operations | 10,274 | 10,013 | 30,694 | 29,074
Operating Segments [Member] | Provider Solutions [Member] |  |  |  |
Revenues, net: |  |  |  |
Revenues, net | 11,427 | 10,797 | 33,678 | 30,748
Operating income from continuing operations: |  |  |  |
Operating income from continuing operations | 1,385 | 1,684 | 4,206 | 2,973
Unallocated [Member] |  |  |  |
Operating income from continuing operations: |  |  |  |
Operating income from continuing operations | $ (7,911) | $ (7,036) | $ (23,516) | $ (19,393)

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