Note 5 - Revenue Recognition - Revenues Disaggregated By Revenue Source (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues	$ 291,646	$ 279,063	$ 266,826
Subscription Services [Member]
Revenues	280,316	267,935	253,960
Professional Services [Member]
Revenues	$ 11,330	$ 11,128	$ 12,866

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.

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+ Details