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Condensed Consolidated Statements of Cash Flows (Parenthetical) (USD $)
In Thousands, unless otherwise specified
277 Months Ended
Mar. 31, 2014
Conversion of convertible preferred stock amount converted $ 5,248
Series B Preferred Stock
 
Conversion of convertible preferred stock amount converted 15,000
Series C Preferred Stock
 
Conversion of convertible preferred stock amount converted $ 50,000