Derivative Instruments Gain (Loss) (Details) - Interest Rate Swap [Member] - Other Nonoperating Income (Expense) [Member] $ in Thousands	3 Months Ended
Jun. 30, 2015 USD ($)
Derivative [Line Items]
Gain (Loss) on Senior Subordinated Convertible Debentures	$ 14,931
Gain (Loss) on Interest Rate Swap	$ (14,971)

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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- Definition

Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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