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v3.19.3.a.u2

Preferred Stock (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 15, 2019 shares | Dec. 31, 2019 USD ($) | Sep. 29, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jul. 01, 2018 USD ($) | Apr. 01, 2018 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) $ / shares shares | Jul. 26, 2016
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends | $ |  | $ 0 | $ 971 | $ 8,733 | $ 8,733 | $ 8,733 | $ 8,732 | $ 8,733 | $ 8,733 | $ 18,437 | $ 34,931 | $ 34,931 |  |
Depository Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depository shares issued |  |  |  |  |  |  |  |  |  |  |  |  | 5,200,000 |
Preferred stock ownership interest |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.01
6.75% Series B Mandatory Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of issued shares |  |  |  |  |  |  |  |  |  |  |  |  | 6.75% |
Offering price (in usd per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 100 |
Proceeds from offering, net | $ |  |  |  |  |  |  |  |  |  |  |  |  | $ 501,000 |
Preferred stock converted in to common stock (in shares) | 132.50 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock issued upon conversion (in shares) | 6,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |

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