Note 12 - Other Long-term Liabilities - Summary of Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other	$ 10,219	$ 8,869
Total other long-term liabilities	78,520	67,827
GCI [Member]
Deferred revenue, noncurrent	29,036	31,113
IRU [Member]
Deferred revenue, noncurrent	34,440	25,732
Service, Other [Member]
Deferred revenue, noncurrent	$ 4,825	$ 2,113