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Cash and Cash Equivalents, and Investments - Strategic Investment (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Oct. 31, 2018 | Dec. 31, 2016
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TAPD, Inc. |  |  |
Schedule of Investments [Line Items] |  |  |
Cost method investment | $ 2.0 |  |
WayUp, Inc. |  |  |
Schedule of Investments [Line Items] |  |  |
Cost method investment |  | $ 10.0 |
Foreign Entity |  |  |
Schedule of Investments [Line Items] |  |  |
Cost method investment |  |  | $ 3.0

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