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Note 19 - Selected Quarterly Financial Data (Unaudited)
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Quarterly Financial Information [Text Block]
NOTE
19
—SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
 
   
201
6
    
2015
  
   
1Q
(1)
    
2Q
    
3Q
    
4Q
    
1Q
    
2Q
    
3Q
    
4Q
  
Contract revenue
   $
283,599
     $
305,419
     $
306,520
     $
289,559
     $
273,527
     $
288,949
     $
288,951
     $
280,805
  
Operating income
    
17,694
      
19,358
      
23,776
      
21,965
      
15,962
      
18,734
      
21,497
      
19,038
  
Net income
    
9,891
      
10,583
      
13,437
      
12,673
      
7,900
      
9,174
      
11,545
      
10,750
  
Earnings per share:
                                                                
Basic
   $
0.52
     $
0.56
     $
0.71
     $
0.67
     $
0.41
     $
0.47
     $
0.60
     $
0.56
  
Diluted
    
0.51
      
0.55
      
0.70
      
0.65
      
0.40
      
0.47
      
0.59
      
0.55
  
Weighted-average common shares outstanding
(in thousands)
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Basic
    
18,994
      
19,008
      
18,965
      
18,988
      
19,450
      
19,475
      
19,316
      
19,102
  
Diluted
    
19,273
      
19,293
      
19,329
      
19,512
      
19,838
      
19,706
      
19,556
      
19,373
  
 
 
 
 
(1)
Includes adjustments for the adoption ASU
2016
-
09
in the
second
quarter of
2016.