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Business Combination - Summary of Revenue and Operating Income (Loss) Included in Company's Condensed Consolidated Statements of Income since the Date of Acquisition (Detail) - Providigm, LLC [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2019
Business Acquisition [Line Items] |  |
Revenues, net | $ 1,862 | $ 5,199
Operating income (loss) | $ 30 | $ (458)

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