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 0000910638-20-000018-xbrl.zip | 231051 | 2020-05-06 16:07:22 |
| ddd-20200331.htm | 1626828 | 2020-05-06 16:07:22 |
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| ddd-20200331ex311.htm | 14343 | 2020-05-06 16:07:22 |
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| ddd-20200331_pre.xml | 305095 | 2020-05-06 16:07:22 |
| FilingSummary.xml | 35475 | 2020-05-06 16:07:22 |
| Financial_Report.xlsx | 67660 | 2020-05-06 16:07:22 |
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| report.css | 2767 | 2020-05-06 16:07:22 |
| Show.js | 1085 | 2020-05-06 16:07:22 |