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Intangible Assets (Details 1) - USD ($)
$ in Thousands
Sep. 30, 2015
Mar. 31, 2015
Estimated amortization of intangible assets with determinable lives    
2016 (remaining six months) $ 3,602  
2017 6,733  
2018 4,481  
2019 3,697  
2020 3,352  
2021 and beyond 2,223  
Net intangible assets $ 24,088 $ 27,689