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Note 4 - Inventories, Net (Details) - Inventory, Stated At Lower of Cost (First-In, First-Out) or Market (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Mar. 31, 2013
Inventory, Stated At Lower of Cost (First-In, First-Out) or Market [Abstract]    
Finished goods, net $ 15,582 $ 30,531
Raw materials, net 10,367 17,766
Work in progress, net 6,769 4,717
Total, net $ 32,718 $ 53,014