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Equity - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Class Of Stock [Line Items] |  |  |
Common stock, shares authorized (in shares) | 75,000,000 | 75,000,000 |
Par value of common stock (in dollars per share) | $ 0.01 |  |
Preferred stock, shares authorized (in shares) | 3,500,000 | 3,500,000 |
Par value of preferred stock per share (in dollars per share) | $ 0.01 | $ 0.01 |
Preferred stock, shares issued (in shares) | 0 |  |
Cash dividends declared or paid | $ 0 | $ 0 | $ 0
Common Stock |  |  |
Class Of Stock [Line Items] |  |  |
Common stock repurchased | 7,400,000 |  |
Maximum | Common Stock |  |  |
Class Of Stock [Line Items] |  |  |
Stock repurchase program, authorized amount | $ 30,000,000.0 |  |

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