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Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Year ended December 31,
(in thousands)		2021				2020
Revenues:
Expedited		$	337,063			$	320,202
Dedicated			324,541				288,652
Managed Freight			321,236				177,579
Warehousing			63,163				52,128
Total revenues		$	1,046,003			$	838,561

Accounts Receivable, Allowance for Credit Loss [Table Text Block]

Years ended December 31:		Beginning balance January 1,				Additional provisions to allowance				Write-offs and other adjustments				Ending balance December 31,
2021		$	2,992			$	1,338			$	(218	)		$	4,112
2020		$	1,440			$	3,011			$	(1,459	)		$	2,992

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

(in thousands except per share data)
		2021				2020
Numerators:
Income (loss) from continuing operations		$	58,191			$	(14,120	)
Income (loss) from discontinued operations, net of tax			2,540				(28,598	)
Net income (loss)		$	60,731			$	(42,718	)
Denominator:
Denominator for basic income per share – weighted-average shares			16,803				17,358
Effect of dilutive securities:
Equivalent shares issuable upon conversion of unvested restricted shares			217				-
Equivalent shares issuable upon conversion of unvested employee stock options			-				-
Denominator for diluted income per share adjusted weighted-average shares and assumed conversions			17,020				17,358
Basic income (loss) per share:
Income (loss) from continuing operations		$	3.46			$	(0.81	)
Income (loss) from discontinued operations		$	0.15			$	(1.65	)
Net income (loss)		$	3.61			$	(2.46	)
Diluted income (loss) per share:
Income (loss) from continuing operations		$	3.42			$	(0.81	)
Income (loss) from discontinued operations		$	0.15			$	(1.65	)
Net income (loss)		$	3.57			$	(2.46	)

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- Definition

Tabular disclosure of allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
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