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Description of Business and Summary of Significant Accounting Policies (Tables)
9 Months Ended
Dec. 31, 2013
Accounting Policies [Abstract]  
Estimated Fair Values of Liabilities Measured on Recurring Basis

The estimated fair values of the liabilities measured on a recurring basis are as follows:

 

     Fair Value Measurements at December 31 and March 31, 2013 (in thousands):  
     Balance at
December 31,
2013
     Quoted
Prices in
Active
Markets
(Level 1)
     Significant
Other
Observable
Inputs
(Level 2)
     Significant
Other
Unobservable
Inputs
(Level 3)
 

Warrant liability

   $ 1,006         —          —        $ 1,006   
     Balance at
March 31,
2013
     Quoted
Prices in
Active
Markets
(Level 1)
     Significant
Other
Observable
Inputs
(Level 2)
     Significant
Other
Unobservable
Inputs
(Level 3)
 

Warrant liability

   $ 6,898         —          —        $ 6,898   
Activity for Liabilities Measured at Estimated Fair Value Using Unobservable Inputs

The following table presents the activity for liabilities measured at estimated fair value using unobservable inputs for 2012 through December 31, 2013:

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)

 

     Warrant
Derivative
Liability
($000’s)
 

Balance at December 31, 2011

   $ 1,267   

Issuances

     32,742   

Adjustments to estimated fair value

     9,931   

Warrant liability removal due to settlements

     (23,321
  

 

 

 

Balance at December 31, 2012

   $ 20,619   

Issuances

     —    

Adjustments to estimated fair value

     12,034   

Warrant liability removal due to settlements

     (23,869

Warrant liability reclassified to equity

     (1,886
  

 

 

 

Balance at March 31, 2013

   $ 6,898   

Issuances

     —    

Adjustments to estimated fair value

     5,397   

Warrant liability removal due to settlements

     (10,522

Warrant liability reclassified to equity

     (767
  

 

 

 

Balance at December 31, 2013

   $ 1,006