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| 0000092122-21-000039-index.html | 2021-04-29 08:15:11 | |
| 0000092122-21-000039.txt | 2021-04-29 08:15:11 | |
 0000092122-21-000039-xbrl.zip | 43701 | 2021-04-29 08:15:11 |
| ex9901-pressreleaseq12021.htm | 25273 | 2021-04-29 08:15:11 |
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| ex9905-consolidatedearning.htm | 57709 | 2021-04-29 08:15:11 |
| ex9906-kilowattxhoursalesa.htm | 36153 | 2021-04-29 08:15:11 |
| ex9907-financialoverviewq1.htm | 47539 | 2021-04-29 08:15:11 |
| FilingSummary.xml | 2109 | 2021-04-29 08:15:11 |
| Financial_Report.xlsx | 7496 | 2021-04-29 08:15:11 |
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| R1.htm | 87432 | 2021-04-29 08:15:11 |
| report.css | 2767 | 2021-04-29 08:15:11 |
| Show.js | 1085 | 2021-04-29 08:15:11 |
| so-20210429.htm | 115208 | 2021-04-29 08:15:11 |
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| so-20210429_lab.xml | 51177 | 2021-04-29 08:15:11 |
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