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Note 8 - Other Long-term Liabilities
6 Months Ended
Jun. 30, 2018
Notes to Financial Statements  
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Noncurrent [Text Block]
8.
OTHER LONG-TERM LIABILITIES
 
Other long-term liabilities consist of the following at
June 30, 2018
and
December 31, 2017:
 
   
2018
   
2017
 
Deferred GCI capacity revenue, net of current portion
  $
32,156
    $
33,184
 
Other deferred IRU capacity revenue, net of current portion
   
22,298
     
19,366
 
Other deferred revenue, net of current portion
   
1,847
     
1,391
 
Other
   
7,955
     
7,389
 
Total other long-term liabilities
  $
64,256
    $
61,330