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Summary of Platform Development Cost Activity (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Property, Plant and Equipment [Line Items] |  |
Stock-based compensation | $ 7,367 | $ 5,099
Platform Development [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Platform development beginning of period | 21,997 |
Payroll-based costs capitalized | 1,582 |
Less dispositions | (7,356) |
Total capitalized costs | 16,223 |
Stock-based compensation | 687 |
Impairments | (211) | $ 0
Platform development end of period | $ 16,699 |

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