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| 0001587732-19-000033-index.html | 2019-04-30 16:16:30 | |
| 0001587732-19-000033.txt | 2019-04-30 16:16:30 | |
 0001587732-19-000033-xbrl.zip | 158773 | 2019-04-30 16:16:30 |
| FilingSummary.xml | 26986 | 2019-04-30 16:16:30 |
| Financial_Report.xlsx | 61460 | 2019-04-30 16:16:30 |
| ogs-20190331.xml | 857206 | 2019-04-30 16:16:30 |
| ogs-20190331.xsd | 41126 | 2019-04-30 16:16:30 |
| ogs-20190331_cal.xml | 58013 | 2019-04-30 16:16:30 |
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| ogs-20190331_lab.xml | 495222 | 2019-04-30 16:16:30 |
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| ogsexhibit3111q10-q2019.htm | 11821 | 2019-04-30 16:16:30 |
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| ogsexhibit3211q10-q2019.htm | 5864 | 2019-04-30 16:16:30 |
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| report.css | 2767 | 2019-04-30 16:16:30 |
| Show.js | 1085 | 2019-04-30 16:16:30 |