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Inventory
3 Months Ended
Jun. 30, 2012
Inventory [Abstract]  
Inventory

6. Inventory

The components of inventory at June 30, 2012 and March 31, 2012 are as follows (in thousands):

    June 30,   March 31,
    2012   2012
Raw materials $ 10,117 $ 9,962
Work-in-process   3,749   2,390
Finished goods   12,893   14,438
Deferred program costs   1,940   2,466
Net inventory $ 28,699 $ 29,256

 

     For the three months ended June 30, 2012, the Company recorded an inventory write-down of approximately $0.3 million based on evaluating its ending inventory on hand for excess quantities and obsolescence.

     Deferred program costs as of June 30, 2012 and March 31 2012 primarily represent costs incurred on D-VAR turnkey projects and programs accounted for under contract accounting where the Company needs to complete development programs before revenue and costs will be recognized, respectively.