Note 2 - Contracts With Clients - Information About Receivables, Contract Assets, and Contract Liabilities From Contracts With Customers (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Accounts receivables	$ 17,426		$ 11,639
Deferred Revenue	(17,328)		(16,354)
Revenue recognized that was included in deferred revenue at beginning of year due to completion of services	(15,366)	$ (15,214)
Increases due to invoicing of client, net of amounts recognized as revenue	16,352	17,829
Decreases due to completion of services (or portion of services) and transferred to accounts receivable	(100)	(51)
Change due to cumulative catch-up adjustments arising from changes in expected contract consideration	(12)	274
Increases due to revenue recognized in the period with additional performance obligations before invoicing	238	$ 131
Other Current Assets [Member]
Contract assets included in other current assets	$ 241		$ 103