Property, Plant And Equipment (Schedule Of Cost And Accumulated Depreciation Of Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 130,844	$ 136,859
Less accumulated depreciation	(56,218)	(46,031)
Property, plant and equipment, net	74,626	90,828
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,643	4,022
Construction In Progress-Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,505	25,331
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	34,398	36,808
Equipment And Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	71,116	62,785
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,626	1,788
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,556	$ 6,125

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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