Merger, Acquisition, and Restructuring Costs - Accrued Merger and Restructuring Cost Activity (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2022 |
Sep. 30, 2021 |
|
| Restructuring Reserve [Roll Forward] | |||
| Restructuring costs, impairments | $ 3,320 | ||
| Non-cash impairments | $ 0 | (3,320) | $ 0 |
| Non-cash stock-based compensation | $ (48) | (2,004) | $ (1,070) |
| SpotX and Telaria | |||
| Restructuring Reserve [Roll Forward] | |||
| Accrued restructuring costs at December 31, 2021 | 2,742 | ||
| Restructuring costs, personnel related and non-cash stock-based compensation | 3,231 | ||
| Cash paid for restructuring costs | (2,571) | ||
| Non-cash stock-based compensation | (2,004) | ||
| Accrued restructuring costs at September 30, 2022 | $ 1,398 | ||