INCOME TAXES ROLLFORWARD OF UNCERTAIN TAX POSITIONS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010
Income Tax Contingency [Line Items]
Liability for Uncertain Tax Positions, Noncurrent	$ 7,133	$ 6,937	$ 4,169
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	345	517
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	0	629
Unrecognized Tax Benefits, Increase from Business Acquisition		5,151
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	(149)	(2,502)
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	0	0
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	$ 0	$ (1,027)