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Note 3 - Restructuring and Cost Savings Initiatives - Summary of Asset Groups Impaired (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Impairment of long lived property, equipment, and right-of-use assets	$ 26,569	$ 0	$ 0
Revenue Equipment [Member] | Highway Services and Dedicated [Member]
Impairment of long lived property, equipment, and right-of-use assets	16,779
Terminal Property [Member] | Highway Services and Dedicated [Member]
Impairment of long lived property, equipment, and right-of-use assets	7,319
Leased Office Facility [Member]
Impairment of long lived property, equipment, and right-of-use assets	2,200
Leased Office Facility [Member] | Managed Freight [Member]
Impairment of long lived property, equipment, and right-of-use assets	2,236
Training and Orientation Center [Member] | Highway Services [Member]
Impairment of long lived property, equipment, and right-of-use assets	$ 235

X

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2611-110228

+ Details

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