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Segment Reporting (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Segment Reporting Details      
Sales Revenue, Services, Net $ 107,614 $ 85,800 $ 70,056
Licenses Revenue 0 3 107
Total revenues $ 107,614 $ 85,803 $ 70,163