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

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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
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- 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

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDescription
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

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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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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Period Type:

- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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Period Type:

- Details

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Namespace Prefix:
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- Details

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- Details

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- Details

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- Details

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Subsequent Event - Additional Information (Details) - USD ($) $ in Millions			12 Months Ended
	Feb. 28, 2022	Jul. 01, 2017	Dec. 31, 2021
Minimum [Member] \| Letter Of Credit [Member]
Subsequent Event [Line Items]
Commitment fee on unused commitments		1.00%
Maximum [Member] \| Letter Of Credit [Member]
Subsequent Event [Line Items]
Commitment fee on unused commitments		2.00%
Credit Agreement [Member]
Subsequent Event [Line Items]
Term of credit agreement		5 years
Amount of credit agreement		$ 350
Credit agreement interest rate description			(i) LIBOR plus a specified margin based upon Hub’s 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% plus one-month LIBOR) plus a specified margin based upon the Total Net Leverage Ratio.
Credit Agreement [Member] \| Minimum [Member]
Subsequent Event [Line Items]
Commitment fee on unused commitments		0.10%
Credit Agreement [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Commitment fee on unused commitments		0.25%
Credit Agreement [Member] \| Federal Funds Rate [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement		0.50%
Credit Agreement [Member] \| LIBOR rate [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement		1.00%
Description of variable rate basis			one-month LIBOR
Credit Agreement [Member] \| Base Rate [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement		1.00%
Subsequent Event [Member] \| Minimum [Member] \| Letter Of Credit [Member]
Subsequent Event [Line Items]
Commitment fee on unused commitments	1.00%
Subsequent Event [Member] \| Maximum [Member] \| Letter Of Credit [Member]
Subsequent Event [Line Items]
Commitment fee on unused commitments	1.75%
Subsequent Event [Member] \| Base Rate [Member] \| Minimum [Member]
Subsequent Event [Line Items]
Commitment fee on unused commitments	0.10%
Subsequent Event [Member] \| Base Rate [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Commitment fee on unused commitments	0.25%
Subsequent Event [Member] \| Credit Agreement [Member]
Subsequent Event [Line Items]
Term of credit agreement	5 years
Amount of credit agreement	$ 350
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 Hub’s 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.
Subsequent Event [Member] \| Credit Agreement [Member] \| Federal Funds Rate [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement	0.50%
Subsequent Event [Member] \| Credit Agreement [Member] \| Secured Overnight Financing Rate [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement	1.00%
Description of variable rate basis	one-month SOFR
Subsequent Event [Member] \| Credit Agreement [Member] \| Secured Overnight Financing Rate [Member] \| Minimum [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement	1.00%
Subsequent Event [Member] \| Credit Agreement [Member] \| Secured Overnight Financing Rate [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement	1.75%
Subsequent Event [Member] \| Credit Agreement [Member] \| Base Rate [Member] \| Minimum [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement	0.00%
Subsequent Event [Member] \| Credit Agreement [Member] \| Base Rate [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Interest rate under the credit agreement	0.75%