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Note 6 - Current Liabilities
12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
6.
CURRENT LIABILITIES
 
Accounts payable, accrued and other current liabilities consist of the following at
December 31, 2019
and
2018:
 
   
2019
   
2018
 
Accounts payable - trade
  $
14,918
    $
14,627
 
Accrued payroll, benefits, and related liabilities
   
12,193
     
13,473
 
Deferred capacity and other revenue
   
7,311
     
6,095
 
Other
   
4,686
     
6,762
 
Total accounts payable, accrued and other current liabilities
  $
39,108
    $
40,957
 
 
Advance billings and customer deposits consist of the following at
December 31, 2019
and
2018:
 
   
2019
   
2018
 
Advance billings
  $
3,730
    $
3,992
 
Customer deposits
   
31
     
32
 
Total advance billings and customer deposits
  $
3,761
    $
4,024