Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of goods sold	$ 530,690		$ 559,138	$ 1,027,517	$ 1,107,716
Income before income taxes and equity in net income of unconsolidated investments	88,075		$ 167,071	$ 203,548	$ 320,930
Out-of-period adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of goods sold	$ 9,800
Income before income taxes and equity in net income of unconsolidated investments		$ (10,300)				$ 500