Share Repurchase Program (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 01, 2016
Equity, Class of Treasury Stock [Line Items]
Purchase of treasury stock (in shares)	3,005,554	1,280,802	0
Treasury stock repurchased (in dollars per share)	$ 6.56	$ 6.64
Purchase of treasury stock	$ 19,700,000	$ 8,500,000
Amount available under the share repurchase program	$ 62,100,000
2016 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized share repurchased program amount				$ 100,000,000.0