Note 1 - Organization and Basis for Presentation - Disaggregation of Revenue by Major Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Revenue	$ 30,551	$ 28,479
Americas [Member]
Revenue	18,336	16,375
EMEA [Member]
Revenue	10,350	10,013
Asia Pacific [Member]
Revenue	$ 1,865	$ 2,091

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details