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Note 2 - Summary of Significant Accounting Policies (Details) - Property and Equipment
12 Months Ended
Mar. 31, 2014
Building and Building Improvements [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 5 years
Building and Building Improvements [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 25 years
Machinery, Equipment, Furniture and Fixtures [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 3 years
Machinery, Equipment, Furniture and Fixtures [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 15 years
Leasehold Improvements [Member] | Minimum [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 5 years
Leasehold Improvements [Member] | Maximum [Member]
 
Property, Plant and Equipment [Line Items]  
Estimated Useful Life 20 years