FAIR VALUE DISCLOSURES (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Mar. 31, 2012	Sep. 30, 2011
Fair Value [Line Items]
Inventories	$ 158,949	$ 157,825	$ 48,801
Assets held for sale	19,552	18,710	649
Assets, Fair Value Disclosure, Nonrecurring	1,961		49,450
Total Assets	4,065	4,171
Carrying value of total debt	734,686	757,245
Fair value of total debt	764,107	789,925
FV Other Assets [Member]
Fair Value [Line Items]
Rabbi Trust investments	4,065	4,171
Senior Notes [Member]
Fair Value [Line Items]
Carrying value of total debt	350,315	350,346
Fair value of total debt	364,438	364,875
Term Loan [Member]
Fair Value [Line Items]
Carrying value of total debt	240,000	245,000
Fair value of total debt	240,000	245,000
Revolving Credit Facility [Member]
Fair Value [Line Items]
Carrying value of total debt	40,000	59,300
Fair value of total debt	40,000	59,300
Convertible Senior Notes [Member]
Fair Value [Line Items]
Carrying value of total debt	104,371	102,599
Fair value of total debt	119,669	120,750
All Other Debt [Member]
Fair Value [Line Items]
Carrying value of total debt	0	0
Fair value of total debt	0	0
Fair Value, Inputs, Level 1 [Member]
Fair Value [Line Items]
Inventories			0
Assets held for sale	0		0
Assets, Fair Value Disclosure, Nonrecurring	0		0
Rabbi Trust investments	4,065
Total Assets	4,065	4,171
Fair Value, Inputs, Level 1 [Member] \| FV Other Assets [Member]
Fair Value [Line Items]
Rabbi Trust investments		4,171
Fair Value, Inputs, Level 2 [Member]
Fair Value [Line Items]
Inventories			48,801
Assets held for sale	1,961		649
Assets, Fair Value Disclosure, Nonrecurring	1,961		49,450
Total Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| FV Other Assets [Member]
Fair Value [Line Items]
Rabbi Trust investments	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value [Line Items]
Inventories			0
Assets held for sale	0		0
Assets, Fair Value Disclosure, Nonrecurring	0		0
Total Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| FV Other Assets [Member]
Fair Value [Line Items]
Rabbi Trust investments	$ 0	$ 0

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Total amount of short-term and long-term debt.

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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- Definition

Current assets (normally turning over within one year or one business cycle if longer) that are held for sale apart from normal operations and anticipated to be sold within one year.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

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Other investments not otherwise specified in the taxonomy.

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