Note 5 - Revenue - Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue	$ 93,629	$ 94,878	$ 276,915	$ 292,117
Communications [Member]
Revenue	24,134	25,309	71,506	74,298
E-Commerce and Consumer [Member]
Revenue	15,524	20,276	48,061	59,015
Financial and Business Service [Member]
Revenue	11,040	13,372	36,347	39,593
Media [Member]
Revenue	15,439	10,748	44,942	40,503
Travel and Hospitality [Member]
Revenue	13,023	13,103	36,569	37,659
Health Care and Education [Member]
Revenue	6,790	6,977	18,277	22,108
Technology, IT and Related Service [Member]
Revenue	3,337	2,615	9,447	9,539
Other Sector [Member]
Revenue	$ 4,342	$ 2,478	$ 11,766	$ 9,402