Pension And Other Postretirement Benefit Plans (Funded Status In Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Non-current liability (reported as pensions and other postretirement benefits)	$ (135,629)	$ (140,529)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Non-current asset (reported in other noncurrent assets)	1,280	1,424
Current liability (included in accounts payable and accrued expenses)	(1,581)	(6,511)
Non-current liability (reported as pensions and other postretirement benefits)	(92,918)	(98,020)
Amounts recognized in the consolidated balance sheets	(93,219)	(103,107)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Non-current asset (reported in other noncurrent assets)	0	0
Current liability (included in accounts payable and accrued expenses)	(3,327)	(3,213)
Non-current liability (reported as pensions and other postretirement benefits)	(42,711)	(42,509)
Amounts recognized in the consolidated balance sheets	$ (46,038)	$ (45,722)