Note 7 - Current Liabilities - Summary of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts payable - trade	$ 11,889	$ 14,627
Accrued payroll, benefits, and related liabilities	15,148	13,473
Deferred capacity and other revenue	5,697	6,095
Other	6,419	6,762
Total accounts payable, accrued and other current liabilities	$ 39,153	$ 40,957