Segment, Major Customer and Major Supplier Information (Details Textual)	3 Months Ended
	Jun. 30, 2014 Customers Segments Plants Countries
Segment Reporting Information [Line Items]
Number of operating segments	4
Number of operating plants	24
Number of plants with recycling operations	10
Number of countries Company operates in	9
Number of major customers	3
North America [Member]
Segment Reporting Information [Line Items]
Number of operating plants	8
Number of fully dedicated recycling facilities	2
Number of plants with recycling operations	1
Number of countries Company operates in	2
Asia [Member]
Segment Reporting Information [Line Items]
Number of operating plants	3
Number of countries Company operates in	2
South America [Member]
Segment Reporting Information [Line Items]
Number of operating plants	3
Europe [Member]
Segment Reporting Information [Line Items]
Number of operating plants	10
Number of fully dedicated recycling facilities	2
Number of plants with recycling operations	2
Number of countries Company operates in	4