Sale of TPack A/S - Components of Gain (Details) (USD $) In Thousands, unless otherwise specified	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
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total proceeds, net of working capital adjustment				$ 30,175
Net assets and liabilities				(184)
Goodwill write off				1,758
Intangibles write off				11,404
Holdback amount				3,353
Legal fees and other costs				483
Gain on sale of TPack	$ 19,699	$ 0	$ 0	$ 19,699	$ 19,700