Note 4 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property and equipment and finance lease	$ 242,481	$ 231,697
Less: accumulated depreciation and amortization	(188,546)	(169,843)
Property and equipment and finance lease, net	53,935	61,854
Computer Equipment [Member]
Property and equipment and finance lease	172,966	161,809
Computer Software, Intangible Asset [Member]
Property and equipment and finance lease	25,805	25,807
Leasehold Improvements [Member]
Property and equipment and finance lease	21,009	21,092
Scanner Appliances [Member]
Property and equipment and finance lease	16,264	16,510
Furniture and Fixtures [Member]
Property and equipment and finance lease	$ 6,437	$ 6,479

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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