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| ex_368706.htm | 8039 | 2022-05-11 16:08:20 |
| FilingSummary.xml | 26304 | 2022-05-11 16:08:20 |
| Financial_Report.xlsx | 64380 | 2022-05-11 16:08:20 |
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| report.css | 2767 | 2022-05-11 16:08:20 |
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| sofo-20220331.xsd | 48479 | 2022-05-11 16:08:20 |
| sofo-20220331_cal.xml | 55252 | 2022-05-11 16:08:20 |
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| sofo20220331_10q_htm.xml | 1375003 | 2022-05-11 16:08:20 |