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Business Combinations - Narrative (Details) - ADFLOW Networks [Member] - USD ($) $ in Thousands | 12 Months Ended |
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Apr. 29, 2017 | Mar. 15, 2016
Business Acquisition [Line Items] |  |
Percentage acquired |  | 100.00%
Business Combination, Contingent Consideration, Liability |  | $ 1,833
Deferred payments period | 3 years |

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