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Note 3 - Investments (Tables)
12 Months Ended
Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]
   

December 31,

 
   

2013

   

2012

 

Cost basis

  $ 255,000     $ 255,000  

Gains included in accumulated other comprehensive income

    1,001,000       38,000  

Fair value

  $ 1,256,000     $ 293,000  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   

December 31,

 
   

2013

   

2012

 

Beginning Balance

  $ -     $ -  

Fair value change in common stock warrants (1)

    350,000       -  

Ending Balance

  $ 350,000     $ -