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Business and Basis of Presentation (Property and Equipment) (Details)
12 Months Ended
Mar. 31, 2017
Building  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 17 years
Machinery  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 5 years
Computer Equipment and Software  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 3 years
Furniture and fixtures  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 7 years
Sydney, Australia  
Property, Plant and Equipment [Line Items]  
Percentage of deposits held in one location 61.00%