Note 3 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenues	$ 47,328	$ 38,408
Search Engine Marketing and Data Service [Member]
Revenues	39,224	25,997
Online Advertising Placement [Member]
Revenues	7,442	8,421
Data and Technical Services [Member]
Revenues	0	1,200
Offline Advertising and Marketing Services [Member]
Revenues	662	1,545
Technical Solution Services [Member]
Revenues	0	1,245
Transferred over Time [Member]
Revenues	47,328	37,163
Transferred at Point in Time [Member]
Revenues	$ 0	$ 1,245