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Note 5 - Property and Equipment - Property and Equipment, at Cost (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, plant, and equipment, gross	$ 729,404	$ 692,532
Revenue Equipment [Member]
Property, plant, and equipment, gross	575,726	538,617
Office Equipment [Member]
Property, plant, and equipment, gross	6,721	5,847
Land and Land Improvements [Member]
Property, plant, and equipment, gross	12,407	11,747
Building and Building Improvements [Member]
Property, plant, and equipment, gross	97,636	104,358
Construction in Progress [Member]
Property, plant, and equipment, gross	6,404	2,968
Property, Plant and Equipment, Other Types [Member]
Property, plant, and equipment, gross	$ 30,510	$ 28,995
Minimum [Member] | Revenue Equipment [Member]
Estimated useful lives (Year)	2 years
Minimum [Member] | Office Equipment [Member]
Estimated useful lives (Year)	5 years
Minimum [Member] | Land and Land Improvements [Member]
Estimated useful lives (Year)	0 years
Minimum [Member] | Building and Building Improvements [Member]
Estimated useful lives (Year)	7 years
Minimum [Member] | Property, Plant and Equipment, Other Types [Member]
Estimated useful lives (Year)	2 years
Maximum [Member] | Revenue Equipment [Member]
Estimated useful lives (Year)	20 years
Maximum [Member] | Office Equipment [Member]
Estimated useful lives (Year)	10 years
Maximum [Member] | Land and Land Improvements [Member]
Estimated useful lives (Year)	15 years
Maximum [Member] | Building and Building Improvements [Member]
Estimated useful lives (Year)	40 years
Maximum [Member] | Property, Plant and Equipment, Other Types [Member]
Estimated useful lives (Year)	10 years

X

- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

+ Details

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X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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