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Treasury Stock - Additional Information (Details) - USD ($) | 6 Months Ended |
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Jun. 30, 2020 | Oct. 17, 2016
Equity, Class of Treasury Stock [Line Items] |  |
Stock repurchase program, additional repurchase authorization |  | $ 300,000,000.0
Treasury stock (shares) | 64,226,667 |
2016 BOD Authorized Common Stock Repurchase [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Treasury Stock, Shares, Acquired (shares) | 259,461 |
Average cost per share of treasury stock acquired (usd per share) | $ 26.71 |
Payments for Repurchase of Common Stock | $ 6,900,000 |
Remaining authorized repurchase amount | $ 105,600,000 |
2004 Amended and Restated Stock Incentive Plan |  |
Equity, Class of Treasury Stock [Line Items] |  |
Average cost per share of treasury stock acquired (usd per share) | $ 28.63 |
Treasury shares issued for restricted stock units that vested during the period (shares) | 582,151 |
Average cost of treasury shares that were issued for restricted stock units that vested during the period (usd per share) | $ 3.16 |
Shares repurchased to satisfy minimum employee withholding tax requirements resulting from the vesting of such restricted stock units (shares) | 217,325 |

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