Certain Financial Statement Information (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Mar. 31, 2012
Schedule of Other current assets
Prepaid expenses	$ 21,388	$ 20,353
Executive deferred compensation assets	1,362	1,344
Deposits	897	899
Proceeds receivable on sale of strategic investment		7,100
Other	2,803	1,409
Other current assets, total	$ 26,450	$ 31,105	[1]

[1] Note: Amounts have been derived from the March 31, 2012 audited consolidated financial statements.