INCOME TAXES - Deferred income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Components of the deferred tax provision or benefit
Amortization, depreciation, and basis differences for property, plant and equipment and other long-lived assets	$ 4,186	$ 1,451	$ 4,975
Amortization of intangibles and impairment	(2,973)	(536)	183
Changes in reserves for workers' compensation, third-party casualty, and cargo claims	(3,713)	(3,294)	(182)
Revenue recognition	13	(1,445)	(1,481)
Allowance for credit losses	(391)	156	(652)
Nonunion pension and other retirement plans	(4)	(3)	957
Multiemployer pension fund withdrawal	172	164	157
Federal and state net operating loss carryforwards utilized (generated)	899	(300)	(259)
State depreciation adjustments	(915)	598	343
Share-based compensation	749	(984)	(195)
Valuation allowance increase	(489)	911	617
Other accrued expenses	(3,104)	(4,097)	1,663
Prepaid expenses	(18)	(788)	1,207
Operating lease right-of-use assets/liabilities - net	(651)	(228)	(13)
Other	(11)	806	395
Deferred tax provision (benefit)	$ (6,250)	$ (7,589)	$ 7,715

-- None. No documentation exists for this element. --

No definition available.

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- Definition

Represents the amount of deferred tax provision or (benefit) on allowance for doubtful accounts during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

Represents the amount of deferred tax provision or (benefit) on amortization of intangible assets and impairment arising during the period due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

This element represents the amount of deferred tax provision or (benefit) on equity-based compensation costs during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

Represents the deferred income tax expense benefit multiemployer pension fund withdrawal.

+ References

No definition available.

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- Definition

Represents the amount of deferred tax provision or (benefit) on operating lease right-of-use assets/liabilities - net during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

Represents the amount of deferred tax provision or (benefit) on federal and state operating loss carryforwards during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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This element represents the amount of deferred tax provision or (benefit) on other costs not otherwise specified in the taxonomy during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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Represents the amount of deferred tax provision or (benefit) on other accrued expenses during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

This element represents the amount of deferred tax provision or (benefit) on pension and other retirement plans costs during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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Represents the amount of deferred tax provision or (benefit) on prepaid expenses during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

This element represents the amount of deferred tax provision or (benefit) on amortization, depreciation and basis difference for property, plant and equipment and other long-lived assets (excluding intangible assets) arising during the period due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

This element represents the amount of deferred tax provision or (benefit) on changes in reserves for workers' compensation and cargo claims arising during the period due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

This element represents the amount of deferred tax provision or (benefit) on revenue recognition arising during the period due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

Represents the amount of deferred tax provision or (benefit) on state depreciation adjustments during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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This element represents the amount of deferred tax provision or (benefit) on valuation allowance during the period, due to an increase or decrease in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

No definition available.

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- Definition

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

+ References

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