RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES (Details) (USD $)	6 Months Ended	12 Months Ended		12 Months Ended			12 Months Ended		24 Months Ended		6 Months Ended
	Sep. 30, 2011	Mar. 31, 2011 Fiscal 2011	Sep. 30, 2011 Fiscal 2011 Payment Multiple	Mar. 31, 2011 Fiscal 2011 Associate related reserves	Mar. 31, 2011 Fiscal 2011 Termination of associates in United States, Australia, and Europe	Sep. 30, 2011 Fiscal 2011 Termination of associates in United States, Australia, and Europe	Mar. 31, 2011 Fiscal 2011 Restructuring adjustments	Mar. 31, 2011 Fiscal 2011 Executive leadership transition	Mar. 31, 2010 Fiscal 2008 and 2009 Lease accruals	Sep. 30, 2011 Fiscal 2008 and 2009 Lease accruals	Sep. 30, 2011 Associate related reserves	Sep. 30, 2011 Ongoing contracts
Restructuring activity
Balance at beginning of period	$ 15,104,000					$ 400,000				$ 8,900,000	$ 5,562,000	$ 9,542,000
Payments	(5,867,000)										(5,306,000)	(561,000)
Charges and adjustments	168,000										223,000	(55,000)
Balance at end of period	9,405,000					400,000				8,900,000	479,000	8,926,000
Gains, Losses and Other Items
Restructuring plan charges and adjustments included in the consolidated statement of operations		$ 4,400,000		$ 3,400,000	$ 3,400,000		$ 1,700,000	$ 2,700,000	$ 22,200,000
Number of lump sum payments of transition charges			1
Number of times of officer's annual salary and bonus opportunity			2