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Fair Value Measurements (Tables)
12 Months Ended
Apr. 30, 2014
Fair Value Measurements [Abstract]  
Schedule Of Fair Value, Assets And Liabilities Measured On Recurring Basis

 

 

 

 

 

 

 

 

 

 

 

Fair value

 

Fair value measurement using

 

 

April 30, 2014

 

Level 1

 

Level 2

 

Level 3

 

 

 

 

 

 

 

 

 

Common stock warrant liability

$

276 

$

 -

$

 -

$

276 

 

Summary Of Activity Of Level 3 Inputs Measured On A Recurring Basis

 

 

 

 

 

(in thousands)

 

Common stock warrants

Balance at April 30, 2012

 

$

 

569 

Change in fair value of common stock warrant liability

 

 

 

(365)

Balance at April 30, 2013

 

 

 

204 

Change in fair value of common stock warrant liability

 

 

 

72 

Balance at April 30, 2014

 

$

 

276