Note 3 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2022	Jun. 30, 2022	Feb. 09, 2022
AAT Carriers Inc [Member]
Stock Purchase Agreement, Earnout Component			$ 20.0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ 0.8
Business Combination, Contingent Consideration, Liability, Fair Value Disclosure	17.0	$ 16.2
Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Derivative Assets (Liabilities), at Fair Value, Net, Total	$ 1.5

Fair value portion of liability recognized arising from contingent consideration in a business combination.

No definition available.

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- Definition

The earnout component of stock purchase agreement.

+ References

No definition available.

+ Details

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- Definition

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

+ References

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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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126966630&loc=d3e41228-113958

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