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|---|---|---|
 0001587732-22-000019-index-headers.html | 2022-02-24 17:05:40 | |
| 0001587732-22-000019-index.html | 2022-02-24 17:05:40 | |
| 0001587732-22-000019.txt | 2022-02-24 17:05:40 | |
 0001587732-22-000019-xbrl.zip | 589155 | 2022-02-24 17:05:40 |
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| ogs-20211231.htm | 2836703 | 2022-02-24 17:05:40 |
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