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Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) shares | Sep. 30, 2020 USD ($) $ / shares shares
Restricted Stock Awards |  |
Class of Stock [Line Items] |  |
Restricted stock and restricted stock units granted (in shares) | shares | 22,000 | 310,000
Grants in the period, aggregate fair value | $ 0.2 | $ 5.5
Unrecognized compensation costs related to restricted stock awards | $ 8.3 | $ 8.3
Weighted average period of recognition |  | 1 year 9 months 18 days
Stock Option Awards |  |
Class of Stock [Line Items] |  |
Weighted average period of recognition |  | 1 year 8 months 12 days
Options, granted (in shares) | shares | 0 | 279,000
Weighted average exercise price (in dollars per share) | $ / shares |  | $ 19.73
Unrecognized compensation costs related to options | $ 3.2 | $ 3.2
Performance Restricted Stock Units |  |
Class of Stock [Line Items] |  |
Restricted stock and restricted stock units granted (in shares) | shares | 0 | 47,000
Grants in the period, aggregate fair value |  | $ 0.9
Unrecognized compensation costs related to restricted stock awards | $ 1.2 | $ 1.2
Weighted average period of recognition |  | 1 year 10 months 24 days

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