Note 2 - Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Dubin [Member]
Total revenue	$ 8,990	$ 9,288	$ 18,848	$ 17,785
Net income	$ 2,008	$ 4,386	$ 4,638	$ 5,466
Basic earnings per share (in dollars per share)	$ 0.15	$ 0.32	$ 0.34	$ 0.40
Basic weighted average shares outstanding (in shares)	13,720	13,607	13,699	13,591
Diluted earnings per share (in dollars per share)	$ 0.15	$ 0.32	$ 0.34	$ 0.40
Diluted weighted average shares outstanding (in shares)	13,817	13,691	13,779	13,686
Temporary Alternatives [Member]
Total revenue	$ 8,990	$ 9,288	$ 18,848	$ 17,431
Net income	$ 2,008	$ 4,590	$ 4,638	$ 6,237
Basic earnings per share (in dollars per share)	$ 0.15	$ 0.34	$ 0.34	$ 0.46
Basic weighted average shares outstanding (in shares)	13,720	13,607	13,699	13,591
Diluted earnings per share (in dollars per share)	$ 0.15	$ 0.34	$ 0.34	$ 0.46
Diluted weighted average shares outstanding (in shares)	13,817	13,691	13,779	13,686
Northbound [Member]
Total revenue	$ 8,990	$ 9,288	$ 18,848	$ 17,621
Net income	$ 2,008	$ 4,579	$ 4,638	$ 6,547
Basic earnings per share (in dollars per share)	$ 0.15	$ 0.34	$ 0.34	$ 0.48
Basic weighted average shares outstanding (in shares)	13,720	13,607	13,699	13,591
Diluted earnings per share (in dollars per share)	$ 0.15	$ 0.34	$ 0.34	$ 0.48
Diluted weighted average shares outstanding (in shares)	13,817	13,691	13,779	13,686
MRINetwork [Member]
Total revenue	$ 8,990	$ 10,936	$ 18,848	$ 20,569
Net income	$ 2,008	$ 5,914	$ 4,638	$ 7,772
Basic earnings per share (in dollars per share)	$ 0.15	$ 0.43	$ 0.34	$ 0.57
Basic weighted average shares outstanding (in shares)	13,720	13,607	13,699	13,591
Diluted earnings per share (in dollars per share)	$ 0.15	$ 0.43	$ 0.34	$ 0.57
Diluted weighted average shares outstanding (in shares)	13,817	13,691	13,779	13,686

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-SubTopic 10
-Topic 805
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479328/805-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(3)
-SubTopic 10
-Topic 805
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479328/805-10-50-2

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479328/805-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479328/805-10-50-2

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