FAIR VALUE DISCLOSURES (Tables)

3 Months Ended

Jun. 30, 2013

Jun. 30, 2012

Fair Value [Abstract]

Schedule of fair value assets measured on non-recurring basis

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance as of June 30, 2013		Total Loss for the Three Months Ended June 30, 2013
Inventories	$	—	$	1,100	$	—	$	1,100	$	(825	)
Assets held for sale	—		2,300		—		2,300		(1,230		)
Total assets	$	—	$	3,400	$	—	$	3,400	$	(2,055	)

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance as of June 30, 2012		Total Loss for the Three Months Ended June 30, 2012
Assets held for sale	$	—	$	3,646	$	—	$	3,646	$	(1,889	)
Total assets	$	—	$	3,646	$	—	$	3,646	$	(1,889	)

Schedule of fair value assets measured on recurring basis

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance as of June 30, 2013		Balance  Sheet Classification
Rabbi Trust investments	$	4,891	$	—	$	—	$	4,891	Other assets
Total assets	$	4,891	$	—	$	—	$	4,891
Contingent consideration	$	—	$	—	$	35,942	$	35,942	Other liabilities and deferred credits
Total liabilities	$	—	$	—	$	35,942	$	35,942

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Balance as of March 31, 2013		Balance  Sheet Classification
Rabbi Trust investments	$	4,837	$	—	$	—	$	4,837	Other assets
Total assets	$	4,837	$	—	$	—	$	4,837
Contingent consideration	$	—	$	—	$	35,625	$	35,625	Other liabilities and deferred credits
Total liabilities	$	—	$	—	$	35,625	$	35,625

Schedule of fair value of debt

	June 30, 2013				March 31, 2013
	Carrying Value		Fair Value		Carrying Value		Fair Value
6¼% Senior Notes	$	450,000	$	461,250	$	450,000	$	484,875
Term Loan	229,472		229,472		230,625		230,625
3% Convertible Senior Notes	107,117		136,376		106,196		131,819
Revolving Credit Facility	102,000		102,000		—		—
Other	1,184		1,184		448		448
	$	889,773	$	930,282	$	787,269	$	847,767

Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table Text Block]

	Significant Unobservable Inputs (Level 3)
Contingent consideration:
Balance as of March 31, 2013	$	35,625
Additions:
Change in fair value of contingent consideration	317
Balance as of June 30, 2013	$	35,942