Note 3 - Fair Value of Financial Instruments (Details Textual) - AAT Carriers Inc [Member] - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Feb. 09, 2022	Dec. 31, 2021
Stock Purchase Agreement, Earnout Component				$ 20,000
Business Combination, Contingent Consideration, Liability, Fair Value Disclosure	$ 17,000	$ 17,000	$ 16,200		$ 0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ 800

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e7008-128479

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Period Type:	duration