Sale of TPack A/S - Additional Information (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Apr. 22, 2013 TPack	Jun. 30, 2013 TPack
Significant Acquisitions and Disposals [Line Items]
Aggregate consideration				$ 33,500,000
Agreed upon price for sale of entity				34,000,000
Working capital adjustment				500,000
Total proceeds, net of working capital adjustment				30,175,000
Holdback amount				3,353,000
Gain on sale of TPack	19,699,000	0	0	19,699,000	19,700,000
Total assets				$ 700,000