Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
Lease Commitments          
Renewal option period     5 years    
Deferred rent $ 0.1   $ 0.1   $ 0.1
Rent expense 0.6 0.5 1.7 1.6  
Inventory
         
Commitments and Contingencies          
Commitment to purchase $ 40.2   $ 40.2