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Certain Financial Statement Information (Details 4) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Mar. 31, 2012
Schedule of Goodwill    
Goodwill related to TPack acquisition, as of September 30, 2012 and March 31, 2012 $ 13,183 $ 13,183 [1]
[1] Note: Amounts have been derived from the March 31, 2012 audited consolidated financial statements.