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Note 1 - Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
New Accounting Pronouncement, Early Adoption [Table Text Block]
   
Year Ended December 31, 2015
    
Year Ended December 1, 2014
  
   
As
Previously
Reported
    
Effect of
Accounting
Change
    
As
Adjusted
    
As
Previously
Reported
    
Effect of
Accounting
Change
    
As
Adjusted
  
                                                 
Cash Flows from Operating Activities:
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Restricted cash and cash equivalents
   $
(9,392
 )   $
9,392
     $
-
     $
(6,245
 )   $
6,245
     $
-
  
Net cash provided by operating activities
    
73,963
      
9,392
      
83,355
      
75,694
      
6,245
      
81,939
  
                                                 
Cash Flows from Investing Activities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Change in restricted cash and cash equivalents
    
8,937
      
(8,937
 )    
-
      
9,523
      
(9,523
 )    
-
  
Net cash used in investing activities
    
(63,847
 )    
(8,937
 )    
(72,784
 )    
(57,508
 )    
(9,523
 )    
(67,031
 )
                                                 
Net Decrease in Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
    
(31,559
 )    
455
      
(31,104
 )    
(11,938
 )    
(3,278
 )    
(15,216
  
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash, Equivalents, Beginning of Period
    
69,767
      
10,651
      
80,418
      
81,705
      
13,929
      
95,634
  
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash, Equivalents,
End of Period
   $
38,208
     $
11,106
     $
49,314
     $
69,767
     $
10,651
     $
80,418