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| 0000028917-19-000190-index.html | 2019-06-07 17:17:01 | |
| 0000028917-19-000190.txt | 2019-06-07 17:17:01 | |
 0000028917-19-000190-xbrl.zip | 133680 | 2019-06-07 17:17:01 |
| dds-050419x10q.htm | 999764 | 2019-06-07 17:17:01 |
| dds-05042019xexx311.htm | 15905 | 2019-06-07 17:17:01 |
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| dds-05042019xexx323.htm | 7851 | 2019-06-07 17:17:01 |
| dds-20190504.xml | 834968 | 2019-06-07 17:17:01 |
| dds-20190504.xsd | 44393 | 2019-06-07 17:17:01 |
| dds-20190504_cal.xml | 82829 | 2019-06-07 17:17:01 |
| dds-20190504_def.xml | 128512 | 2019-06-07 17:17:01 |
| dds-20190504_lab.xml | 504811 | 2019-06-07 17:17:01 |
| dds-20190504_pre.xml | 280144 | 2019-06-07 17:17:01 |
| FilingSummary.xml | 25551 | 2019-06-07 17:17:01 |
| Financial_Report.xlsx | 46774 | 2019-06-07 17:17:01 |
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| R9.htm | 59863 | 2019-06-07 17:17:01 |
| report.css | 2767 | 2019-06-07 17:17:01 |
| Show.js | 1085 | 2019-06-07 17:17:01 |