Note 3 - Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue	$ 143,060	$ 148,580	$ 151,568
Transferred over Time [Member] \| Subscription Services [Member]
Revenue	134,208	140,172	141,981
Transferred over Time [Member] \| Fixed, Non-subscription Services [Member]
Revenue	3,447	3,503	3,134
Transferred over Time [Member] \| Unit Price Services [Member]
Revenue	600	834	2,222
Transferred at Point in Time [Member] \| Service [Member]
Revenue	$ 4,805	$ 4,071	$ 4,231

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