Schedule of Outstanding Debt (Parenthetical) (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2017 USD ($)
Secured Equipment Notes due in June 2022 [Member]
Debt Instrument [Line Items]
Equipment notes due	Jun. 30, 2022
Payment Frequency	monthly
Equipment notes, date of first required payment	Jul. 31, 2017
Interest rate secured debt	2.62%
Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Payment Frequency	monthly
Equipment notes due period	2021
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]
Payment Frequency	monthly
Equipment notes due period	2020
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
Secured Equipment Notes due in 2019 [Member]
Debt Instrument [Line Items]
Payment Frequency	monthly
Equipment notes due period	2019
Secured Equipment Notes due in 2019 [Member] \| Commencing on 2014 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2014
Secured Equipment Notes due in June 2018 [Member]
Debt Instrument [Line Items]
Equipment notes due	Jun. 30, 2018
Payment Frequency	quarterly
Monthly payments	$ 500
Equipment notes, date of first required payment	Aug. 31, 2013
Minimum [Member] \| Secured Equipment Notes due in June 2022 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 30
Minimum [Member] \| Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 10
Interest rate secured debt	2.04%
Minimum [Member] \| Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 40
Interest rate secured debt	1.72%
Minimum [Member] \| Secured Equipment Notes due in 2019 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 80
Interest rate secured debt	1.87%
Minimum [Member] \| Secured Equipment Notes due in June 2018 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	1.90%
Maximum [Member] \| Secured Equipment Notes due in June 2022 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 300
Maximum [Member] \| Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 300
Interest rate secured debt	2.96%
Maximum [Member] \| Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 400
Interest rate secured debt	2.26%
Maximum [Member] \| Secured Equipment Notes due in 2019 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 400
Interest rate secured debt	2.24%
Maximum [Member] \| Secured Equipment Notes due in June 2018 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.00%

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

Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-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=6877327&loc=d3e13212-122682

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Period Type:	duration

- Definition

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

+ References

+ Details

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Period Type:	duration

- Definition

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

+ References

+ Details

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- 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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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-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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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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