XML 15 R33.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value (Tables)
3 Months Ended
Mar. 31, 2013
Schedule of Assumptions for Fair Value
Fair value at March 31, 2013, was estimated using the following assumptions:
 
Underlying price per share
$0.19
Exercise price per share
$1.31-$1.65
Risk-free interest rate
0.16%-0.21%
Expected holding period
1.14-1.64 yrs.
Expected volatility
105.98%-107.26%
Expected dividend yield
None
Schedule of fair value, assets and liabilities measured on recurring basis
The table below presents the balances of assets and liabilities measured at fair value on a recurring basis by level within the hierarchy as of March 31, 2013:
 
(in thousands)
 
Total
 
Level 1
 
Level 2
 
Level 3
Assets:
 

 
 

 
 

 
 

Marketable Securities-unrestricted
$
21,410

 
$
21,410

 
$

 
$

Marketable Securities-restricted
$
14,837

 
$
14,837

 
$

 
$

Liabilities:
 

 
 

 
 

 
 

Warrants
$
(206
)
 
$

 
$

 
$
(206
)
Fair Value, Inputs, Level 3 [Member]
 
Fair value, liabilities measured on recurring basis
The changes in Level 3 Liabilities measured at fair value on a recurring basis are summarized as follows:
 
Fair Value of Redeemable
Warrants
 
(in thousands)
 
2013
 
2012
Balance at January 1
$
295

 
$
380

Fair value adjustment at March 31
(89
)
 
151

Balance at March 31
$
206

 
$
531