Note 10 - Revenue 1 (Details Textual)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Customers	0	0
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Customers	0	0
Minimum [Member]
Domain Services, Purchased Term (Year)	1 year
Finite-Lived Intangible Asset, Useful Life (Year)	2 years
Minimum [Member] | Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	1 year
Maximum [Member]
Domain Services, Purchased Term (Year)	10 years
Finite-Lived Intangible Asset, Useful Life (Year)	15 years
Maximum [Member] | Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years