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Note 10 - Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2017
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
   
Asset (Liability)
 
   
 
 
 
 
Fair Value Measurements Using
 
   
Fair Value at
   
Inputs Considered as:
 
Description
 
June 30, 2017
   
Level 1
   
Level 2
   
Level 3
 
Derivative instruments
  $
(578
)   $
(578
)   $
-
    $
-
 
Preferred stock, trust preferred securities, exchange traded debt instruments, and other equity instruments
  $
120,728
    $
120,728
    $
-
    $
-
 
                                 
   
Asset (Liability)
 
   
 
 
 
 
Fair Value Measurements Using
 
   
Fair Value at
   
Inputs Considered as:
 
Description
 
December 31, 2016
   
Level 1
   
Level 2
   
Level 3
 
Derivative instruments
  $
(258
)   $
(258
)   $
-
    $
-
 
Preferred stock, trust preferred securities, exchange traded debt instruments, and other equity instruments
  $
106,146
    $
106,146
    $
-
    $
-