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Schedule of Outstanding Debt (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Secured Equipment Notes due in December 2019 [Member]
Debt Instrument [Line Items]
Equipment notes due	Dec. 31, 2019
Monthly payments	$ 0.2us-gaap_DebtInstrumentPeriodicPayment / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueDecemberTwoThousandNineteenMember
Equipment notes, date of first required payment	Jan. 31, 2015
Interest rate secured debt	2.24%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueDecemberTwoThousandNineteenMember
Payment Frequency	Monthly
Secured Equipment Notes due in November 2019 [Member]
Debt Instrument [Line Items]
Equipment notes due	Nov. 30, 2019
Monthly payments	0.5us-gaap_DebtInstrumentPeriodicPayment / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueNovemberTwoThousandNineteenMember
Equipment notes, date of first required payment	Dec. 31, 2014
Interest rate secured debt	2.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueNovemberTwoThousandNineteenMember
Payment Frequency	Monthly
Secured Equipment Notes due in September 2019 [Member]
Debt Instrument [Line Items]
Equipment notes due	Sep. 30, 2019
Monthly payments	0.4us-gaap_DebtInstrumentPeriodicPayment / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueSeptemberTwoThousandNineteenMember
Equipment notes, date of first required payment	Sep. 30, 2014
Interest rate secured debt	2.15%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueSeptemberTwoThousandNineteenMember
Payment Frequency	Monthly
Secured Equipment Notes due in February 2019 [Member]
Debt Instrument [Line Items]
Equipment notes due	Feb. 28, 2019
Monthly payments	0.4us-gaap_DebtInstrumentPeriodicPayment / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueFebruaryTwoThousandNineteenMember
Equipment notes, date of first required payment	Jan. 31, 2014
Payment Frequency	Monthly
Lower interest rate paid at a fixed rate	1.87%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueFebruaryTwoThousandNineteenMember
Upper interest rate paid at a fixed rate	1.93%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueFebruaryTwoThousandNineteenMember
Secured Equipment Notes due in June 2018 [Member]
Debt Instrument [Line Items]
Equipment notes due	Jun. 30, 2018	Jun. 30, 2018
Monthly payments	$ 0.5us-gaap_DebtInstrumentPeriodicPayment / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueJuneTwoThousandEighteenMember	$ 0.5us-gaap_DebtInstrumentPeriodicPayment / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueJuneTwoThousandEighteenMember
Equipment notes, date of first required payment	Aug. 31, 2013	Aug. 31, 2013
Payment Frequency	Quarterly	Quarterly
Lower interest rate paid at a fixed rate	1.90%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueJuneTwoThousandEighteenMember	1.90%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueJuneTwoThousandEighteenMember
Upper interest rate paid at a fixed rate	2.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueJuneTwoThousandEighteenMember	2.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum / us-gaap_LongtermDebtTypeAxis = hubg_EquipmentNotesDueJuneTwoThousandEighteenMember

X

- 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 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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 3: 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=6479336&loc=d3e64711-112823

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- Definition

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

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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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 3: 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=6479336&loc=d3e64711-112823

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X

- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

Maximum contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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- Definition

Minimum contractual interest rate for funds borrowed, under the debt agreement.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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(a)(2))

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X

- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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Period Type:	duration

X

- Definition

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

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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



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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