Note 5 - Revenue - Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue	$ 92,089	$ 101,092
Communications [Member]
Revenue	23,985	24,343
E-Commerce and Consumer [Member]
Revenue	15,996	20,143
Financial and Business Service [Member]
Revenue	13,379	13,135
Media [Member]
Revenue	13,966	15,351
Travel and Hospitality [Member]
Revenue	11,699	12,272
Health Care and Education [Member]
Revenue	6,646	8,633
Technology, IT and Related Service [Member]
Revenue	3,271	3,619
Other Sector [Member]
Revenue	$ 3,147	$ 3,596