Note 6 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2023	Dec. 31, 2023	Oct. 04, 2023
Marketable Securities, Total	$ 0	$ 0
Goodwill and Intangible Asset Impairment	$ 0
Evertel Technologies, LLC [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			$ 1,050
Business Combination, Contingent Consideration, Liability		$ 926	$ 890

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Publisher FASB
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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 805
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- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

No definition available.

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- Definition

Amount of investment in marketable security.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
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-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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-Paragraph 1
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