XML 60 R30.htm IDEA: XBRL DOCUMENT v2.4.0.6
Note 9 - Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2012
Schedule of Dividend Payment Restrictions [Table Text Block]
 
Quarterly average
 realized silver price
 per ounce
 
Quarterly dividend
 per share
 
Annual dividend
per share
 
  $ 30  
$0.01
 
$0.04
 
  $ 35  
$0.02
 
$0.08
 
  $ 40  
$0.03
 
$0.12
 
  $ 45  
$0.04
 
$0.16
 
  $ 50  
$0.05
 
$0.20
 
  $ 55  
$0.06
 
$0.24
 
  $ 60  
$0.07
 
$0.28
 
Schedule of Dividends Payable [Table Text Block]
Declaration date
 
(A)
Silver-price-
linked
component
 per share
 
(B)
Minimum
 annual
 component
per share
 
(A+B)
 
Total
dividend
per share
 
Total dividend
 amount (in
 millions)
 
Month of payment
November 8, 2011
 
$0.02
 
$0
 
$0.02
 
$5.6
 
December 2011
February 17, 2012
 
$0.01
 
$0.0025
 
$0.0125
 
$3.6
 
March 2012
May 8, 2012
 
$0.02
 
$0.0025
 
$0.0225
 
$6.4
 
June 2012
August 7, 2012
 
$—
 
$0.0025
 
$0.0025
 
$0.7
 
September 2012
November 2, 2012
 
$0.02
 
$0.0025
 
$0.0225
 
$6.4
 
December 2012
February 25, 2013
 
$—
 
$0.0025
 
$0.0025
 
$0.7
 
anticipated in March 2013
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Warrants Outstanding
Warrants
 
Exercise Price
 
Expiration Date
           
Series 1 warrants
5,200,519
 
$
2.41
 
June 2014
Series 1 warrants
460,976
 
2.52
 
June 2014
Series 3 warrants
16,671,128
 
2.46
 
August 2014
           
Total warrants outstanding
22,332,623
       
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   
2010
 
Weighted average fair value of options granted
  $ 3.18  
Expected stock price volatility
    92.00 %
Risk-free interest rate
    1.43 %
Expected life of options (years)
    2.9  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
   
Shares Subject to
 Options
   
Weighted Average
Exercise Price
 
Outstanding, December 31, 2011
    1,194,796     $ 6.72  
Expired
    (256,388 )   $ 8.56  
Outstanding, December 31, 2012
    938,408     $ 6.23  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
   
Shares
   
Weighted Average
Grant Date Fair
Value per Share
 
Unvested, January 1, 2012
    561,276     $ 6.39  
Granted
    723,669     $ 4.51  
Canceled
    (16,461 )   $ 7.29  
Distributed
    (231,338 )   $ 6.65  
Unvested, December 31, 2012
    1,037,146     $ 5.11