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Net Income (Loss) per Share - Narrative (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Apr. 27, 2021 | Feb. 16, 2021 | Jun. 30, 2021 | Sep. 30, 2021
Class of Stock [Line Items] |  |  |  |
Stock compensation expense |  |  | $ 4.1 |
Restricted Stock Units (RSUs) | 2017 Equity Plan |  |  |  |
Class of Stock [Line Items] |  |  |  |
Shares awarded (in shares) | 31,984 | 398,945 |  |
Shares to be issued upon settlement of awards (in shares) |  |  |  | 87,209
Common stock shares contingently issuable (in shares) |  |  |  | 13,157
Service-based RSUs | 2017 Equity Plan |  |  |  |
Class of Stock [Line Items] |  |  |  |
Vesting period |  |  |  | 3 years
RSUs excluded from computation of earnings per share (in shares) |  |  |  | 317,915
Service-based RSUs | 2016 Equity Plan |  |  |  |
Class of Stock [Line Items] |  |  |  |
RSUs excluded from computation of earnings per share (in shares) |  |  |  | 6,219
Performance and market-based RSUs | 2017 Equity Plan |  |  |  |
Class of Stock [Line Items] |  |  |  |
Vesting period |  |  |  | 3 years
RSUs excluded from computation of earnings per share (in shares) |  |  |  | 521,916
Phantom Share Units (PSUs) | 2016 and 2017 Equity Plans |  |  |  |
Class of Stock [Line Items] |  |  |  |
Settlement period |  |  |  | 5 years

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