Senior Secured Second-Priority Notes (Outstanding Amount Of Senior Secured Second-Priority Notes) (Details) (USD $) In Thousands	Sep. 30, 2011	Mar. 31, 2011
Net Carrying Amount	$ 431,161	$ 226,331
Secured Debt [Member]
Debt Instrument, Principal Outstanding	436,000	236,000
Unamortized Premium/(Discount)	(4,839)	(9,669)
Net Carrying Amount	$ 431,161	$ 226,331

The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Principles Board Opinion (APB)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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