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Note 6 - Analysis of Franchised and Company-owned Offices - Franchised and Owned Branch Locations (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Franchised and owned branch locations	217	139	147
Opened	14	5
Closed	(1)	(13)
Purchased in 2021 (net of sold locations)	65

X

- Definition

Represents franchised and owned branch locations.

+ References

No definition available.

+ Details

Name:	hqi_FranchisedAndOwnedBranchLocations
Namespace Prefix:	hqi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents franchised and owned branch locations closed.

+ References

No definition available.

+ Details

Name:	hqi_FranchisedAndOwnedBranchLocationsClosed
Namespace Prefix:	hqi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents franchised and owned branch locations opened.

+ References

No definition available.

+ Details

Name:	hqi_FranchisedAndOwnedBranchLocationsOpened
Namespace Prefix:	hqi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents franchised and owned branch locations purchased.

+ References

No definition available.

+ Details

Name:	hqi_FranchisedAndOwnedBranchLocationsPurchased
Namespace Prefix:	hqi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration