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Stockholders' Equity (Details) $ / shares in Units, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 USD ($) vote $ / shares shares | Mar. 31, 2018 USD ($) shares
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Common stock shares authorized (in shares) | 300,000,000.0 |
Common stock par value (USD per share) | $ / shares | $ 0.01 |
Preferred stock authorized shares (in shares) | 10,000.00 |
Preferred stock par or stated value (in dollars per share) | $ / shares | $ 0.01 |
Common stock, number of votes granted per common share held | vote | 1 |
Treasury stock, shares, acquired (in shares) | 15,731 | 0
Value of treasury stock acquired | $ | $ 0.8 |
Performance-based Restricted Stock Units |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Value of treasury stock acquired | $ | $ 2.9 | $ 2.9
Repurchase of shares upon vesting of PRSUs withheld to satisfy tax withholding obligations (in shares) | 100,000 |
February 2016 Program |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Remaining shares under share repurchase authorization | $ | $ 226.1 |

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