Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Sep. 30, 2012
Mar. 31, 2012
Inventories    
Raw materials $ 21,149 $ 18,476
Work in process   151
Finished goods 1,725 1,567
Total 22,874 20,194
Less non-current portion (3,474) (1,313)
Current portion $ 19,400 $ 18,881
Weighted average age of non-current portion of inventories 1 year 2 months 12 days