Note 4 - Fair Value Measurements - Changes in the Fair Value of Level 3 Contingent Consideration Liabilities (Details) - Contingent Consideration Liabilities [Member] $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Balance	$ 0
Balance	1,109
Z-Sciences [Member]
Contingent consideration liability established in connection with the acquisition	179
Acculogic [Member]
Contingent consideration liability established in connection with the acquisition	$ 930

Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration