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INVENTORIES (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Mar. 31, 2013
INVENTORIES [Abstract]    
Raw materials $ 13,275 $ 12,621
Work-in-process 4,001 3,696
Finished goods 10,092 10,469
Inventories $ 27,368 $ 26,786