Letter of credit facility expiration period.

No definition available.

Name:	hubg_LetterOfCreditFacilityExpirationPeriod
Namespace Prefix:	hubg_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of reference rate used for variable rate of debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-15

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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-12

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of interest rate for borrowing under credit facility. Includes, but is not limited to, terms and method for determining interest rate.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
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-Topic 470
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

+ Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
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-Paragraph 1
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+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Details

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- Details

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- Details

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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_StandbyLettersOfCreditMember
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Balance Type:
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- Details

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- Details

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- Details

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Long-Term Debt and Financing Arrangements - Additional Information (Detail) - USD ($)		9 Months Ended
	Jun. 20, 2025	Sep. 30, 2025	Dec. 31, 2024
Line Of Credit Facility [Line Items]
Interest rate under the credit agreement	2.00%
Minimum [Member] \| Base Rate [Member]
Line Of Credit Facility [Line Items]
Commitment fee on unused commitments	0.10%
Maximum [Member] \| Base Rate [Member]
Line Of Credit Facility [Line Items]
Commitment fee on unused commitments	0.25%
Letter of Credit [Member] \| Minimum [Member]
Line Of Credit Facility [Line Items]
Commitment fee on unused commitments	1.00%
Letter of Credit [Member] \| Maximum [Member]
Line Of Credit Facility [Line Items]
Commitment fee on unused commitments	1.75%
Standby Letters of Credit [Member]
Line Of Credit Facility [Line Items]
Letters of credit expiration, year		2026
Outstanding letters of credit		$ 700,000	$ 800,000
Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Amount of credit agreement	$ 450,000,000
Term of credit agreement	5 years
Credit agreement interest rate description		(i) the secured overnight financing rate (published by the Federal Reserve Bank of New York, “SOFR”), plus a specified margin based on the term of such borrowing, plus a specified margin based upon our total net leverage ratio (as defined in the Credit Agreement) (the "Total Net Leverage Ratio"), or (ii) the base rate (which is the highest of (a) the administrative agent's prime rate, (b) the federal funds rate plus 0.50% or (c) the sum of 1% and one-month SOFR) plus a specified margin based upon the Total Net Leverage Ratio.
Borrowings under bank revolving line of credit		$ 0	0
Unused and available borrowings under bank revolving line of credit and credit agreement		449,300,000	349,200,000
Credit Agreement [Member] \| Federal Funds Rate [Member]
Line Of Credit Facility [Line Items]
Interest rate under the credit agreement	0.50%
Credit Agreement [Member] \| Secured Overnight Financing Rate [Member]
Line Of Credit Facility [Line Items]
Interest rate under the credit agreement	1.00%
Description of variable rate basis	one-month SOFR
Credit Agreement [Member] \| Minimum [Member] \| Base Rate [Member]
Line Of Credit Facility [Line Items]
Interest rate under the credit agreement	0.00%
Credit Agreement [Member] \| Minimum [Member] \| Secured Overnight Financing Rate [Member]
Line Of Credit Facility [Line Items]
Interest rate under the credit agreement	1.00%
Credit Agreement [Member] \| Maximum [Member] \| Base Rate [Member]
Line Of Credit Facility [Line Items]
Interest rate under the credit agreement	0.75%
Credit Agreement [Member] \| Maximum [Member] \| Secured Overnight Financing Rate [Member]
Line Of Credit Facility [Line Items]
Interest rate under the credit agreement	1.75%
2022 Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Borrowings under bank revolving line of credit		$ 0	$ 0