Segment Reporting (Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 99,545	$ 222,241	$ 282,511	$ 440,538
Long-term Assets:
Total long-term assets	260,576		260,576		$ 270,943
North America [Member]
Segment Reporting Information [Line Items]
Net sales	43,122	123,293	142,973	242,660
Long-term Assets:
Total long-term assets	95,351		95,351		87,430
South America [Member]
Segment Reporting Information [Line Items]
Net sales	7,010	16,614	21,580	33,946
Long-term Assets:
Total long-term assets	34,927		34,927		52,518
Europe and Other [Member]
Segment Reporting Information [Line Items]
Net sales	49,413	$ 82,334	117,958	$ 163,932
Long-term Assets:
Total long-term assets	$ 130,298		$ 130,298		$ 130,995