Disposal group including discontinued operation closing adjustments.

No definition available.

Name:	hees_DisposalGroupIncludingDiscontinuedOperationClosingAdjustments
Namespace Prefix:	hees_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of branches sold.

+ References

No definition available.

+ Details

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Namespace Prefix:	hees_
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- Definition

Number of counties excluded in distribution territory.

+ References

No definition available.

+ Details

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- Definition

Period of transition of certain functions.

+ References

No definition available.

+ Details

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- Definition

Sale of business, transaction closing date.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=109222160&loc=d3e1107-107759

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-Name Accounting Standards Codification
-Topic 205
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-Section 45
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-URI https://asc.fasb.org/extlink&oid=109222160&loc=SL51721533-107759

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ 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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This element represents the cash inflow during the period from the sale of a component of the entity.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

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Acquisitions and Dispositions - Additional Information (Detail) $ in Thousands			3 Months Ended	6 Months Ended
	Sep. 17, 2021 USD ($) County Branch	Jul. 19, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)
Business Acquisition [Line Items]
Gain on sales of property and equipment, net				$ 2,382	$ 834
Crane Business [Member]
Business Acquisition [Line Items]
Proceeds from sale of business		$ 130,000
Proceeds from sale of business subject to finalization of adjustments		$ 135,900
Closing adjustments of discontinued operations				$ 1,900
Sale of business, transaction closing date		Oct. 01, 2021
Crane Business [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Period of transition of certain functions		60 days
Crane Business [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Period of transition of certain functions		6 months
Arkansas Sale [Member]
Business Acquisition [Line Items]
Proceeds from sale of business	$ 9,000
Gain on sales of property and equipment, net			$ 5,300
Net book value	$ 3,700
Number of branches sold \| Branch	2
Arkansas Sale [Member] \| Southeast Arkansas [Member]
Business Acquisition [Line Items]
Number of counties excluded in distribution territory \| County	5