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|---|---|---|
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| 0000910638-19-000011-index.html | 2019-08-07 16:05:49 | |
| 0000910638-19-000011.txt | 2019-08-07 16:05:49 | |
 0000910638-19-000011-xbrl.zip | 218297 | 2019-08-07 16:05:49 |
| ddd-20190630.xsd | 39176 | 2019-08-07 16:05:49 |
| ddd-20190630_cal.xml | 93373 | 2019-08-07 16:05:49 |
| ddd-20190630_def.xml | 128565 | 2019-08-07 16:05:49 |
| ddd-20190630_lab.xml | 510433 | 2019-08-07 16:05:49 |
| ddd-20190630_pre.xml | 293878 | 2019-08-07 16:05:49 |
| ddd2019-06x30form10xqd.htm | 1900350 | 2019-08-07 16:05:49 |
| ddd2019-06x30form10xqd_htm.xml | 1424522 | 2019-08-07 16:05:49 |
| ddd20190630ex311.htm | 14248 | 2019-08-07 16:05:49 |
| ddd20190630ex312.htm | 14621 | 2019-08-07 16:05:49 |
| ddd20190630ex321.htm | 6406 | 2019-08-07 16:05:49 |
| ddd20190630ex322.htm | 6405 | 2019-08-07 16:05:49 |
| FilingSummary.xml | 36883 | 2019-08-07 16:05:49 |
| Financial_Report.xlsx | 77402 | 2019-08-07 16:05:49 |
 logo-3d.jpg | 13081 | 2019-08-07 16:05:49 |
| MetaLinks.json | 484074 | 2019-08-07 16:05:49 |
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| report.css | 2767 | 2019-08-07 16:05:49 |
| Show.js | 1085 | 2019-08-07 16:05:49 |