Note 6 - Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	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

Schedule of Advance Billing and Customer Deposits [Table Text Block]

	2019		2018
Advance billings	$	3,730	$	3,992
Customer deposits		31		32
Total advance billings and customer deposits	$	3,761	$	4,024