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Stock-Based Compensation (Tables)
 9 Months Ended
Jun. 30, 2013
Summarize Information about Stock Options

The following tables summarize information about stock options under the 2000 Stock Option Plan, the 2004 Stock Option Plan and as inducement options outside of an equity incentive plan:

 

 

 

Number of
Options
Outstanding

 

 

Weighted-
Average
Exercise
Price
Per Share

 

  

Weighted-
Average
Remaining
Contractual
Term

 

  

Aggregate
Intrinsic
Value

Balance At September 30, 2011

 

  729,096

  

 

$

  9.03

  

  

 

 

 

  

 

 

Granted

 

  1,229,500

  

 

 

  4.40

  

  

 

 

 

  

 

 

Cancelled

 

(42,919

) 

 

 

  11.77

  

  

 

 

 

  

 

 

Exercised

 

(4,883

) 

 

 

  5.20

 

 

 

 

 

 

 

 

Balance At September 30, 2012

 

  1,910,794

  

 

$

  6.01

  

  

 

 

 

  

 

 

Granted

 

  949,000

  

 

 

  2.03

  

  

 

 

 

  

 

 

Cancelled

 

  0

  

 

 

  0

  

  

 

 

 

  

 

 

Exercised

 

  0

  

 

 

  0

  

  

 

 

 

  

 

 

Balance At June 30, 2013

 

  2,859,794

  

 

$

  4.69

  

  

 

8.2 years

  

  

$

—

Exercisable At June 30, 2013

 

  1,129,939

  

 

$

  7.01

  

  

 

6.6 years

  

  

$

—

 
Assumptions Used to Value Stock Options

The assumptions used to value stock options are as follows:

 

 

Nine months ended June 30,

 

2013

 

2012

Dividend yield

  0

 

—

Risk-free interest rate

 0.7% to 1.25% 

 

 0.9% to 1.7% 

Volatility

  69

%

 

 90% to 100% 

Expected life (in years)

 5.5 to 6.25 

 

 5.5 to 6.25 

Weighted average grant date fair value per share of options granted

$

  1.26

 

$

  3.79