Capital Structure - Share Repurchase Program (Details) - USD ($) shares in Millions |
11 Months Ended | 12 Months Ended | ||||
---|---|---|---|---|---|---|
Jul. 27, 2018 |
Dec. 31, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Feb. 28, 2018 |
|
Class of Stock [Line Items] | ||||||
Authorized repurchase amount | $ 100,000,000 | |||||
Increase in authorized repurchase amount | $ 50,000,000 | |||||
Value of shares repurchased | $ 66,218,000 | $ 2,683,000 | $ 4,539,000 | |||
Class A | ||||||
Class of Stock [Line Items] | ||||||
Authorized repurchase amount | $ 50,000,000.0 | |||||
Number of shares repurchased | 2.6 | |||||
Value of shares repurchased | $ 65,900,000 | |||||
Remaining capacity for future purchases | $ 34,100,000 | $ 34,100,000 |