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Note 4 - Marketable Securities (Tables)
3 Months Ended
Mar. 31, 2014
Disclosure Text Block Supplement [Abstract]  
Marketable Securities [Table Text Block]
   

March 31, 2014

   

Adjusted

Cost

   

Unrealized

Gains

   

Unrealized

Losses

   

Fair Value

Equity instruments

  $ 58,635     $ 11,073     $ (2,745

)

  $ 66,963    

Preferred stock

    18,756       1,613       (25

)

    20,344    

Trust preferred securities

    20,240       803       (12

)

    21,031    

Exchange traded debt instruments

    1,809       123       -       1,932    

Total

  $ 99,440     $ 13,612     $ (2,782

)

  $ 110,270    
   

December 31, 2013

 
   

Adjusted

Cost

   

Unrealized

Gains

   

Unrealized

Losses

   

Fair Value

 

Equity instruments

  $ 51,711     $ 11,597     $ (278

)

  $ 63,030  

Preferred stock

    18,519       893       (299

)

    19,113  

Trust preferred securities

    19,726       386       (235

)

    19,877  

Exchange traded debt instruments

    2,243       34       (26

)

    2,251  

Total

  $ 92,199     $ 12,910     $ (838

)

  $ 104,271