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v3.24.1.u1

Redeemable Preferred Units - Additional Information (Details) | 3 Months Ended
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Mar. 31, 2024
Series A Preferred Units [Member] |
Distributions paid quarterly at annual fixed rate | 3.00%
Series A-1 Preferred Units [Member] |
Distributions paid quarterly at annual fixed rate | 3.00%
Series B Preferred Units [Member] |
Distributions paid quarterly at annual fixed rate | 5.75%

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- Definition Percentage of non-cumulative cash dividend. + References No definition available. + Details
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Namespace Prefix: | ghi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesAPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ghi_SeriesA1PreferredUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ghi_SeriesBPreferredUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |