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Intangible Assets - Schedule of Future Amortization Expense (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Mar. 31, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2014 $ 641  
2015 1,043  
2016 121  
2017 121  
2018 121  
2019 20  
Net carrying amount $ 2,067 $ 2,083