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Restructuring And Impairments (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Mar. 31, 2012
Restructuring And Impairments [Abstract]
Reduction in global workforce, percentage		25.00%	50.00%
Restructuring costs	$ 2,194,000	$ 2,338,000
Cash payments	(1,112,000)	(1,928,000)
Asset impairment charge	$ 4,500,000

X

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The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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