Revenue - Foreign Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total sales	$ 269,599	$ 378,750
Pre-tax income	(108,691)	(21,300)
Net income	(72,345)	(19,324)
Consolidated Assets	2,433,124		$ 2,553,234
Foreign Operations
Disaggregation of Revenue [Line Items]
Total sales	21,605	15,300
Pre-tax income	4,213	900
Net income	3,328	800
Consolidated Assets	$ 29,705	$ 10,100