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Note 1 - Basis of Presentation (Tables)
3 Months Ended
Mar. 31, 2017
Notes Tables  
Schedule of Variable Interest Entities [Table Text Block]
 
 
March 31,
 
 
 
2017
 
Assets:
 
 
 
 
Broadcast licenses
  $
149,846
 
Total assets
  $
149,846
 
         
Liabilities:
 
 
 
 
Current liabilities:
       
Accrued liability for option exercise
  $
43,846
 
Note payable
   
106,000
 
Total current liabilities
   
149,846
 
Total liabilities
  $
149,846
 
Schedule of Weighted Average Number of Shares [Table Text Block]
 
 
Three Months Ended
 
 
 
March 31,
 
 
 
2017
 
 
2016
 
                 
Weighted-average shares outstanding-basic
   
71,877
     
71,791
 
Common stock equivalents for stock options and restricted stock
   
642
     
791
 
Weighted-average shares outstanding-diluted
   
72,519
     
72,582
 
Property, Plant and Equipment [Table Text Block]
 
 
 
 
 
 
 
 
 
 
Estimated
 
 
 
March 31,
 
 
December 31,
 
 
Useful Lives
 
 
 
2017
 
 
2016
 
 
(in years)
 
Property and equipment:
                           
Land
  $
48,421
    $
44,611
     
 
 
 
 
Buildings and improvements
   
145,077
     
139,078
     
7
 to
40
 
Equipment
   
487,667
     
471,798
     
3
 to
20
 
     
681,165
     
655,487
     
 
 
 
 
Accumulated depreciation
   
(341,181
)    
(329,394
)    
 
 
 
 
Total property and equipment, net
  $
339,984
    $
326,093