| Cover | Mar. 10, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 10, 2022 |
| Entity Registrant Name | HGR Liquidating Trust |
| Entity File Number | 000-53964 |
| Entity Incorporation, State or Country Code | MD |
| Entity Tax Identification Number | 85-6328984 |
| Entity Address, Address Line One | 2800 Post Oak Boulevard |
| Entity Address, Address Line Two | Suite 5000 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77056-6118 |
| City Area Code | 888 |
| Local Phone Number | 220-6121 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001453818 |
| Amendment Flag | false |
