Schedule of Outstanding Debt (Parenthetical) (Detail)	6 Months Ended
Jun. 30, 2020
Debt Instrument [Line Items]
Payment frequency for interim funding for deposit on equipment	monthly
Secured Equipment Notes due in 2025 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2025
Payment Frequency	monthly
Secured Equipment Notes due in 2025 [Member] \| Commencing on 2020 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2020
Secured Equipment Notes due in 2024 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2024
Payment Frequency	monthly
Secured Equipment Notes due in 2024 [Member] \| Commencing on 2020 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2020
Secured Equipment Notes due in 2024 [Member] \| Commencing on 2018 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2018
Secured Equipment Notes due in 2024 [Member] \| Commencing on 2019 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2019
Secured Equipment Notes due in 2023 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2023
Payment Frequency	monthly
Secured Equipment Notes due in 2023 [Member] \| Commencing on 2018 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2018
Secured Equipment Notes due in 2023 [Member] \| Commencing on 2019 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2019
Secured Equipment Notes due in 2022 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2022
Payment Frequency	monthly
Secured Equipment Notes due in 2022 [Member] \| Commencing on 2017 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2017
Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2021
Payment Frequency	monthly
Secured Equipment Notes due in 2021 [Member] \| Commencing on 2017 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2017
Secured Equipment Notes due in 2021 [Member] \| Commencing on 2016 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2016
Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2020
Payment Frequency	monthly
Secured Equipment Notes due in 2020 [Member] \| Commencing on 2016 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2016
Secured Equipment Notes due in 2020 [Member] \| Commencing on 2015 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2015
Minimum [Member] \| Secured Equipment Notes due in 2025 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	1.51%
Minimum [Member] \| Secured Equipment Notes due in 2024 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.49%
Minimum [Member] \| Secured Equipment Notes due in 2023 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.23%
Minimum [Member] \| Secured Equipment Notes due in 2022 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.16%
Minimum [Member] \| Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.04%
Minimum [Member] \| Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	1.84%
Maximum [Member] \| Secured Equipment Notes due in 2025 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	1.80%
Maximum [Member] \| Secured Equipment Notes due in 2024 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	3.59%
Maximum [Member] \| Secured Equipment Notes due in 2023 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	4.16%
Maximum [Member] \| Secured Equipment Notes due in 2022 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.85%
Maximum [Member] \| Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.96%
Maximum [Member] \| Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.78%

Debt instrument date of first required payment period.

No definition available.

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

- Definition

Debt instrument maturity period.

+ References

No definition available.

+ Details

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

- Definition

Interim funding for deposit on equipment frequency of periodic payment.

+ References

No definition available.

+ Details

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Namespace Prefix:	hubg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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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Balance Type:	na
Period Type:	duration

- Details

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