Debtor's Financial Statements (Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	$ (150,621)	$ (199,493)
Capital expenditures	(76,936)	(51,378)
Proceeds from asset sales	7,624	4,191
Net cash used in investing activities	(69,312)	(43,726)
Increase in other debt	196,240	270,009
Financing fees and other	(16,057)us-gaap_PaymentsOfFinancingCosts	(29,221)us-gaap_PaymentsOfFinancingCosts
Net cash provided by financing activities	177,109	225,792
Net decrease in cash and cash equivalents	(48,732)	(15,953)
Cash and cash equivalents, beginning of period	103,711	104,289
Cash and cash equivalents, end of period	54,979
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(164,857)	(259,895)
Capital expenditures	(28,287)	(21,808)
Proceeds from asset sales	27	111
Net cash used in investing activities	(28,260)	(21,697)
Increase in other debt	196,173	295,653
Financing fees and other	(16,072)	(29,221)
Net cash provided by financing activities	180,101	266,432
Net decrease in cash and cash equivalents	(13,016)	(15,160)
Cash and cash equivalents, beginning of period	17,349	26,419
Cash and cash equivalents, end of period	$ 4,333	$ 11,259

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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