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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