Note 12 - Acquisition of Lew Thompson & Son Trucking, Inc - Summary of Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Apr. 06, 2023	Dec. 31, 2022
Goodwill	$ 68,946		$ 58,217
Lew Thompson & Son Trucking, Inc. [Member]
Accounts receivable		$ 5,135
Driver advances and other receivables		794
Inventory and supplies		1,015
Prepaid expenses		561
Net property and equipment		43,121
Other assets, net		120
Other intangibles, net		52,870
Total identifiable assets acquired		103,616
Accounts payable		(565)
Accrued expenses		(1,322)
Current portion of operating lease obligations		(396)
Current portion of insurance and claims accrual		(56)
Long-term portion of operating lease obligations		(2,103)
Total liabilities assumed		(4,442)
Net identifiable assets acquired		99,174
Goodwill		10,729
Net assets acquired		$ 109,903