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Acquisition - Narrative (Details) - USD ($) $ in Thousands |  | 6 Months Ended
--- | --- | ---
Jun. 17, 2021 | Jun. 30, 2021 | Jun. 30, 2020
Business Acquisition [Line Items] |  |  |
Cash paid for acquisition net of cash acquired |  | $ 22,774 | $ 0
Pulse Q&A Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Percent of outstanding membership interests acquired | 100.00% |  |
Purchase price | $ 30,000 |  |
Cash paid for acquisition net of cash acquired | 22,800 |  |
Future compensation expense | $ 4,500 |  |
Future compensation expense, recognition period | 3 years |  |
Acquired finite lived intangible assets and goodwill | $ 30,600 |  |
Acquired other liabilities | $ 600 |  |

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