Note 5 - Revenue - Disaggregated Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenue	$ 385,074	$ 470,242
Revenue	385,074	470,242
Less: Warrant contra revenue	0	87
Revenues, Total	385,074	470,329
Communications [Member]
Revenue	99,253	88,487
Revenue	99,253	88,487
E-Commerce and Consumer [Member]
Revenue	77,565	89,560
Revenue	77,565	89,560
Financial and Business Service [Member]
Revenue	53,013	95,023
Revenue	53,013	95,023
Media [Member]
Revenue	51,945	72,239
Revenue	51,945	72,239
Travel and Hospitality [Member]
Revenue	50,191	55,832
Revenue	50,191	55,832
Health Care and Education [Member]
Revenue	29,054	42,998
Revenue	29,054	42,998
Technology, IT and Related Service [Member]
Revenue	12,151	13,126
Revenue	12,151	13,126
Other Sector [Member]
Revenue	11,902	12,977
Revenue	$ 11,902	$ 12,977