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Note 14 - Subsequent Events (Details Textual) - USD ($) $ in Thousands, shares in Millions		1 Months Ended	3 Months Ended
	Apr. 26, 2023	May 03, 2023	Mar. 31, 2023	Mar. 31, 2022
Treasury Stock, Value, Acquired, Cost Method			$ 20,805	$ 14,800
Subsequent Event [Member] | Lew Thompson & Son Trucking, Inc. [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Business Combination, Consideration Transferred	$ 100,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 30,000
Business Combination, Contingent Consideration, Earnout Period (Year)	3 years
Payments to Acquire Businesses, Gross	$ 45,000
Subsequent Event [Member] | Lew Thompson & Son Trucking, Inc. [Member] | Revolving Credit Facility [Member] | Lenders [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 55,000
Subsequent Event [Member] | Common Class A [Member]
Treasury Stock, Shares, Acquired (in shares)		0.1
Treasury Stock, Value, Acquired, Cost Method		$ 4,500

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