Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000003153-21-000004-index-headers.html | 2021-04-27 13:46:15 | |
| 0000003153-21-000004-index.html | 2021-04-27 13:46:15 | |
| 0000003153-21-000004.txt | 2021-04-27 13:46:15 | |
 0000003153-21-000004-xbrl.zip | 17649 | 2021-04-27 13:46:15 |
| FilingSummary.xml | 1766 | 2021-04-27 13:46:15 |
| Financial_Report.xlsx | 5677 | 2021-04-27 13:46:15 |
| MetaLinks.json | 27449 | 2021-04-27 13:46:15 |
| R1.htm | 38822 | 2021-04-27 13:46:15 |
| report.css | 2767 | 2021-04-27 13:46:15 |
| Show.js | 1085 | 2021-04-27 13:46:15 |
| so-20210423.htm | 50362 | 2021-04-27 13:46:15 |
| so-20210423.xsd | 5059 | 2021-04-27 13:46:15 |
| so-20210423_cal.xml | 750 | 2021-04-27 13:46:15 |
| so-20210423_def.xml | 21241 | 2021-04-27 13:46:15 |
| so-20210423_htm.xml | 10818 | 2021-04-27 13:46:15 |
| so-20210423_lab.xml | 44983 | 2021-04-27 13:46:15 |
| so-20210423_pre.xml | 22047 | 2021-04-27 13:46:15 |