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, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Net Sales:
Total net sales	$ 173,846	$ 162,057	$ 523,365	$ 490,171
Long-term Assets:
Total long-term assets	143,879		143,879		$ 132,343
Continuing Operations [Member]
Net Sales:
Total net sales	173,846	162,057	523,365	490,171
Long-term Assets:
Total long-term assets	143,879		143,879		132,343
Continuing Operations [Member] \| North America [Member]
Net Sales:
Total net sales	108,605	96,676	321,973	281,108
Long-term Assets:
Total long-term assets	63,934		63,934		60,099
Continuing Operations [Member] \| South America [Member]
Net Sales:
Total net sales	22,342	24,339	60,207	73,857
Long-term Assets:
Total long-term assets	63,925		63,925		56,943
Continuing Operations [Member] \| Europe and Other [Member]
Net Sales:
Total net sales	42,899	$ 41,042	141,185	$ 135,206
Long-term Assets:
Total long-term assets	$ 16,020		$ 16,020		$ 15,301