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Stockholders' Deficit (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Components of Stockholder's equity
Beginning Balance			$ (19,516)
Net loss	(63,280)us-gaap_ProfitLoss	(34,477)us-gaap_ProfitLoss	(230,983)us-gaap_ProfitLoss	(165,663)us-gaap_ProfitLoss
Defined benefit plans, net of tax of $349	1,216	80	3,188	(338)
Translation adjustment	(22,343)	5,422	(59,382)	24,977
Common stock issuance/other			358us-gaap_StockholdersEquityOther
Stock compensation			753
Ending Balance	(305,582)		(305,582)
Defined benefit plans, tax			349
Common Stock
Components of Stockholder's equity
Beginning Balance			791
Common stock issuance/other			(11)
Ending Balance	780		780
Additional Paid-in Capital
Components of Stockholder's equity
Beginning Balance			1,139,850
Common stock issuance/other			(1)
Stock compensation			753
Ending Balance	1,140,602		1,140,602
Accumulated Deficit
Components of Stockholder's equity
Beginning Balance			(1,157,124)
Net loss			(230,968)
Ending Balance	(1,388,092)		(1,388,092)
Accumulated Other Comprehensive Loss
Components of Stockholder's equity
Beginning Balance			(11,449)
Defined benefit plans, net of tax of $349			3,188
Translation adjustment			(59,380)
Ending Balance	(67,641)		(67,641)
Noncontrolling Interests
Components of Stockholder's equity
Beginning Balance			8,416
Net loss			(15)
Defined benefit plans, net of tax of $349
Translation adjustment			(2)
Common stock issuance/other			370
Stock compensation
Ending Balance	$ 8,769		$ 8,769