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Property, Plant And Equipment
12 Months Ended
Mar. 31, 2011
Property, Plant And Equipment [Abstract]  
Property, Plant And Equipment

7. Property, Plant and Equipment

     The cost and accumulated depreciation of property and equipment at March 31, 2011 and 2010 are as follows (in thousands):

  March 31,
    2011     2010  
Land $ 4,022   $ 4,022  
Construction in progress—equipment   25,968     13,099  
Buildings   36,852     36,599  
Equipment and software   57,151     34,980  
Furniture and fixtures   1,807     1,502  
Leasehold improvements   5,024     3,389  
Property, Plant and equipment, gross   130,824     93,591  
Less accumulated depreciation and amortization   (34,330 )   (29,276 )
Property, plant and equipment, net $ 96,494   $ 64,315  

 

     Depreciation and amortization expense was $8.4 million, $7.1 million, and $5.6 million for the fiscal years ended March 31, 2011, 2010, and 2009, respectively.