Note 3 - Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Total revenues, net		$ 58,631	$ 74,991	$ 99,878
Subscription and Circulation [Member]
Total revenues, net		54,532	73,453	97,486
Strategic Agreements [Member]
Total revenues, net		4,099	1,538	2,392
UNITED STATES
Total revenues, net		40,907	49,637	69,220
UNITED KINGDOM
Total revenues, net		7,664	9,556	11,083
Other [Member]
Total revenues, net	[1]	$ 10,060	$ 15,798	$ 19,575

[1] No individual country within the "Other" category accounted for 10% or more of revenues, net for any period presented.