Note 11 - Revenue - Cost of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Network, other costs	$ 2,485	$ 2,385	$ 4,901	$ 4,780
Impairment of Property Plant and Equipment	1,525	0	1,525	0
Cost of revenue	59,156	59,610	117,991	115,912
Network Expenses [Member]
Network, other costs	2,485	2,385	4,901	4,780
Network, depreciation and amortization costs	3,356	2,352	6,587	4,327
Impairment of Property Plant and Equipment	1,525	0	1,525	0
Cost of revenue	7,366	4,737	13,013	9,107
Network Access Services [Member]
Cost of revenue	10,325	11,762	21,898	23,574
Network, other costs	605	516	1,143	1,038
Impairment of Property Plant and Equipment	1,525		1,525
Cost of revenue	15,060	13,946	29,612	27,744
Network Access Services [Member] | Mobile Services [Member]
Cost of revenue	8,660	10,806	18,517	21,549
Network Access Services [Member] | Other Services [Member]
Cost of revenue	1,665	956	3,381	2,025
Domain Name Services [Member]
Cost of revenue	41,465	43,111	83,080	83,231
Network, other costs	1,880	1,869	3,758	3,742
Impairment of Property Plant and Equipment	0		0
Cost of revenue	44,096	45,664	88,379	88,168
Domain Name Services [Member] | Wholesale [Member]
Cost of revenue	37,116	38,555	74,370	74,187
Domain Name Services [Member] | Retail Services [Member]
Cost of revenue	4,219	4,409	8,453	8,768
Domain Name Services [Member] | Portfolio [Member]
Cost of revenue	130	147	257	276
Domain Name Services [Member] | Domain Services [Member] | Wholesale [Member]
Cost of revenue	36,354	37,817	72,823	72,656
Domain Name Services [Member] | Value Added Services [Member] | Wholesale [Member]
Cost of revenue	$ 762	$ 738	$ 1,547	$ 1,531