Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Lease Commitments      
Renewal option period 5 years    
Deferred rent $ 0.1 $ 0.1  
Rent expense 2.3 2.1 2.1
Inventory
     
Commitments and Contingencies      
Commitment to purchase $ 32.2