Sale of TPack A/S Sale of TPack A/S (Details) (USD $)	3 Months Ended		0 Months Ended	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Apr. 22, 2013 TPack [Member]	Jun. 30, 2013 TPack [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Adjusted sale price of entity			$ 33,500,000
Agreed upon price for sale of entity			34,000,000
Working capital adjustment to sale price			500,000
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]
Total proceeds, net of working capital adjustment			30,175,000
Net assets and liabilities			(184,000)
Goodwill write off			(1,757,000)
Intangibles write off			(11,404,000)	11,400,000
Holdback amount			3,353,000
Legal fees and other costs			(484,000)
Gain on sale of TPack	19,699,000	0	19,699,000
Cash, cash equivalents and short term investments			$ 700,000