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Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) shares | Sep. 30, 2019 USD ($) $ / shares shares
Restricted Stock Awards |  |
Class of Stock [Line Items] |  |
Restricted stock and restricted stock units granted (in shares) | shares | 11,000 | 285,000
Grants in the period, aggregate fair value | $ 0.1 | $ 4.5
Unrecognized compensation costs related to restricted stock awards | $ 7.1 | $ 7.1
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 9 months 18 days
Options, granted (in shares) | shares | 0 | 300,000
Weighted average exercise price (in dollars per share) | $ / shares |  | $ 17.00
Unrecognized compensation costs related to options | $ 3.1 | $ 3.1
Performance Restricted Stock Units |  |
Class of Stock [Line Items] |  |
Restricted stock and restricted stock units granted (in shares) | shares | 0 | 48,000
Grants in the period, aggregate fair value |  | $ 0.8
Unrecognized compensation costs related to restricted stock awards | $ 1.1 | $ 1.1
Weighted average period of recognition |  | 1 year 10 months 24 days

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