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Business Segment And Geographic Information (Geographic Information About Property, Plant And Equipment Associated With Particular Regions) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Mar. 31, 2012
Segment Reporting Information [Line Items]    
Property, plant and equipment, net $ 74,626 $ 90,828
North America [Member]
   
Segment Reporting Information [Line Items]    
Property, plant and equipment, net 71,127 83,421
Europe [Member]
   
Segment Reporting Information [Line Items]    
Property, plant and equipment, net 1,941 3,538
Asia Pacific [Member]
   
Segment Reporting Information [Line Items]    
Property, plant and equipment, net $ 1,558 $ 3,869