Note 4 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues	$ 1,652	$ 3,531
Search Engine Marketing and Data Service [Member]
Revenues	49	3,531
Online Advertising Placement [Member]
Revenues	970	0
Blockchain-based SaaS services [Member]
Revenues	615	0
IP Services [Member]
Revenues	18	0
Transferred over Time [Member]
Revenues	67	3,531
Transferred at Point in Time [Member]
Revenues	$ 1,585	$ 0