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Note 3 - Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
March 31
, 201
7
   
December 31, 2016
 
Cable distribution systems
  $
1,069,545
    $
1,048,790
 
Customer premise equipment
   
179,893
     
181,852
 
Other equipment and fixtures
   
371,429
     
359,957
 
Buildings and leasehold improvements
   
89,021
     
88,592
 
Capitalized software
   
87,591
     
83,815
 
Construction in progress
   
60,592
     
64,822
 
Land
   
9,612
     
9,612
 
Total property, plant and equipment
   
1,867,683
     
1,837,440
 
Less accumulated depreciation
   
(1,250,944
)
   
(1,217,819
)
Property, plant and equipment, net
  $
616,739
    $
619,621