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Segment Information (Details 2) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Net revenues from unaffiliated customers:        
Revenue $ 13,116 $ 11,361 $ 37,010 $ 33,627
Foreign country threshold for percentage of total revenue, maximum     10.00% 10.00%
United States
       
Net revenues from unaffiliated customers:        
Revenue 7,054 7,013 20,877 20,504
Foreign countries
       
Net revenues from unaffiliated customers:        
Revenue $ 6,062 $ 4,348 $ 16,133 $ 13,123