Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions		3 Months Ended		6 Months Ended
	Jul. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
Class of Stock [Line Items]
Shares repurchased in period (in shares)		0.0	9.6
Shares repurchased, weighted average price per share			$ 12.47
Remaining authorized repurchase amount		$ 291,000		$ 291,000
Quarterly cash dividend paid (per share)				$ 0.06
Total dividends paid				$ 41,426	$ 0
Subsequent Event
Class of Stock [Line Items]
Quarterly cash dividend declared (per share)	$ 0.06