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Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions		1 Months Ended	9 Months Ended
	Oct. 24, 2019	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Class of Stock [Line Items]
Shares repurchased in period (in shares)			7.3
Shares repurchased, weighted average price per share			$ 12.92
Quarterly cash dividend paid (per share)		$ 0.06
Total dividends paid		$ 21,000	$ 20,989	$ 0
First Quarter 2019 Repurchase Program
Class of Stock [Line Items]
Remaining authorized repurchase amount		$ 131,000	$ 131,000
Subsequent Event
Class of Stock [Line Items]
Quarterly cash dividend declared (per share)	$ 0.06

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