Segment Reporting (Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Net Sales:
Total net sales	$ 162,057	$ 170,338	$ 490,171	$ 493,768
Long-term Assets:
Total long-term assets	130,328		130,328		$ 153,240
Continuing Operations [Member]
Net Sales:
Total net sales	162,057	170,338	490,171	493,768
Long-term Assets:
Total long-term assets	130,328		130,328		153,240
Continuing Operations [Member] \| North America [Member]
Net Sales:
Total net sales	96,676	86,744	281,108	246,260
Long-term Assets:
Total long-term assets	58,648		58,648		53,406
Continuing Operations [Member] \| South America [Member]
Net Sales:
Total net sales	24,339	37,029	73,857	103,865
Long-term Assets:
Total long-term assets	57,256		57,256		85,433
Continuing Operations [Member] \| Europe and Other [Member]
Net Sales:
Total net sales	41,042	$ 46,565	135,206	$ 143,643
Long-term Assets:
Total long-term assets	$ 14,424		$ 14,424		$ 14,401