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Intangible Assets (Details 2) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2013
Mar. 31, 2012
Estimated amortization of intangible assets with determinable lives        
2015 (remaining nine months) $ 5,286      
2016 7,024      
2017 6,553      
2018 4,301      
2019 3,517      
2020 and beyond 4,494      
Net intangible assets $ 31,175 $ 33,016 $ 25,684 $ 27,550