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Note 13 - Unaudited Quarterly Financial Data (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Quarterly Financial Information [Table Text Block]
 
 
Quarter
 
 
 
First
 
 
Second
 
 
Third
 
 
Fourth
 
 
 
(In thousands, except per share amounts)
 
2016
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Revenues
   $
38,794
    $
30,487
    $
27,821
    $
26,617
 
Operating loss
    
(128,256
 )    
(66,338
 )    
(19,766
 )    
(16,965
 )
Net loss
    
(91,182
 )    
(47,580
 )    
(24,729
 )    
(39,488
 )
Per share (basic)
   $
(3.66
 )   $
(1.90
 )   $
(0.98
 )   $
(1.57
 )
Per share (diluted)
   $
(3.66
 )   $
(1.90
 )   $
(0.98
 )   $
(1.57
 )
                                 
2015
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Revenues
   $
89,092
    $
74,461
    $
60,668
    $
50,585
 
Operating loss
    
(558
 )    
(4,207
 )    
(167,081
 )    
(11,706
 )
Net loss
    
(5,126
 )    
(8,245
 )    
(185,226
 )    
(16,638
 )
Per share (basic)
   $
(0.21
 )   $
(0.33
 )   $
(7.48
 )   $
(0.67
 )
Per share (diluted)
   $
(0.21
 )   $
(0.33
 )   $
(7.48
 )   $
(0.67
 )