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Intangible Assets (Details 1) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Mar. 31, 2014
Estimated amortization of intangible assets with determinable lives    
2015 (remaining six months) $ 3,519  
2016 7,024  
2017 6,553  
2018 4,301  
2019 3,517  
2020 and beyond 4,494  
Net intangible assets $ 29,408 $ 33,016