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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