Note 6 - Acquisition of AAT Carriers, Inc. - Results of Operations From Acquisition Date (Details) - AAT Carriers Inc [Member] $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($)
Total revenue	$ 33,061
Net income	$ 13,263

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration