Segment, Geographical Area, Major Customer and Major Supplier Information (Details Textual)	12 Months Ended
	Mar. 31, 2015 Customers segment plant country
Segment Reporting Information [Line Items]
Number of operating segments	4
Number of operating plants	25
Number of plants with recycling operations	11
Number of countries Company operates in	11
Number of largest 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
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
Asia [Member]
Segment Reporting Information [Line Items]
Number of operating plants	5
Number of plants with recycling operations	3
Number of countries Company operates in	4
South America [Member]
Segment Reporting Information [Line Items]
Number of operating plants	2