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Business Segments - Business Segment Information Based on Net Revenues and Operating Income (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Revenues, net: |  |
Revenues, net | $ 61,572 | $ 65,187
Operating income from continuing operations: |  |
Operating income from continuing operations | 7,244 | 5,369
Workforce Solutions [Member] |  |
Revenues, net: |  |
Revenues, net | 49,824 | 54,295
Provider Solutions [Member] |  |
Revenues, net: |  |
Revenues, net | 11,748 | 10,892
Operating Segments [Member] | Workforce Solutions [Member] |  |
Revenues, net: |  |
Revenues, net | 49,824 | 54,295
Operating income from continuing operations: |  |
Operating income from continuing operations | 13,370 | 11,529
Operating Segments [Member] | Provider Solutions [Member] |  |
Revenues, net: |  |
Revenues, net | 11,748 | 10,892
Operating income from continuing operations: |  |
Operating income from continuing operations | 1,197 | 1,436
Unallocated [Member] |  |
Operating income from continuing operations: |  |
Operating income from continuing operations | $ (7,323) | $ (7,596)

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