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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, 2012
Mar. 31, 2011
Segment Reporting Information [Line Items]    
Property, plant and equipment, net $ 90,828 $ 96,494
U.S. And Other North America [Member]
   
Segment Reporting Information [Line Items]    
Property, plant and equipment, net 83,421 86,971
Europe [Member]
   
Segment Reporting Information [Line Items]    
Property, plant and equipment, net 3,538 5,895
Other Asia-Pacific [Member]
   
Segment Reporting Information [Line Items]    
Property, plant and equipment, net $ 3,869 $ 3,628