Annual report pursuant to Section 13 and 15(d)

Description of the Company and Basis of Presentation (Details)

v2.4.0.6
Description of the Company and Basis of Presentation (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2010
Description of the Company and Basis of Presentation        
Loss from operations $ (21,958) $ (31,737) $ (33,726)  
Cash and cash equivalents $ 38,817 $ 49,952 $ 33,456 $ 47,270