Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

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Basis of Presentation (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Mar. 31, 2014
Mar. 31, 2013
Basis of Presentation        
Loss from operations $ (6,675) $ (6,580)    
Cash and cash equivalents $ 46,695 $ 21,598 $ 27,859 $ 38,817
Minimum period for which cash and cash equivalents are believed to be sufficient to meet the entity's cash needs 12 months