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Certain Financial Statement Information Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Mar. 31, 2014
Schedule of Inventories    
Finished goods $ 11,609 $ 9,375
Work in process 8,103 6,510
Raw materials 961 3,061
Inventories, total $ 20,673 $ 18,946