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Note 7 - Results of Operations by Quarter (Unaudited)
 12 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Quarterly Financial Information [Text Block]
7.
RESULTS OF OPERATIONS BY QUARTER (UNAUDITED)
 
   
Quarter ended
  
   
December 31
    
March 31
    
June 30
    
September 30
  
   
(in thousands except per share amounts)
  
2018
                                
Revenues
   $
10,252
     $
9,338
     $
11,007
     $
10,106
  
Costs and expenses
    
13,697
      
13,711
      
13,716
      
13,639
  
Loss from operations
    
(3,445
 )    
(4,373
 )    
(2,709
 )    
(3,533
 )
Other income, net
    
1,334
      
4,041
      
1,027
      
879
  
Other-than-temporary impairment losses on investments
    
---
      
---
      
---
      
(4,560
 )
Loss before taxes
    
(2,111
 )    
(332
 )    
(1,682
 )    
(7,214
 )
Benefits from income taxes
    
16,850
      
100
      
710
      
1,880
  
Net income (loss)
    
14,739
      
(232
 )    
(972
 )    
(5,334
 )
Basic and diluted net income (loss) per share
    
10.67
      
(.17
 )    
(.70
 )    
(3.86
 )
2017
                                
Revenues
   $
9,990
     $
10,279
     $
10,201
     $
10,914
  
Costs and expenses
    
12,843
      
13,545
      
13,834
      
14,329
  
Loss from operations
    
(2,853
 )    
(3,266
 )    
(3,633
 )    
(3,415
 )
Other income, net
    
1,072
      
2,005
      
817
      
1,205
  
Income (loss) before taxes
    
(1,781
 )    
(1,261
 )    
(2,816
 )    
(2,210
 )
Benefits from income taxes
    
310
      
4,240
      
1,465
      
1,135
  
Net (loss) income
    
(1,471
 )    
2,979
      
(1,351
 )    
(1,075
 )
Basic and diluted net income (loss) per share
    
(1.07
 )    
2.16
      
(.98
 )    
(.77
 )