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| 0000910638-16-000016-index.html | 2016-03-14 09:14:57 | |
| 0000910638-16-000016.txt | 2016-03-14 09:14:57 | |
 0000910638-16-000016-xbrl.zip | 283011 | 2016-03-14 09:14:57 |
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| ddd-20151231xex4.htm | 238112 | 2016-03-14 09:14:57 |
| ddd-20151231_cal.xml | 112184 | 2016-03-14 09:14:57 |
| ddd-20151231_def.xml | 319472 | 2016-03-14 09:14:57 |
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| Financial_Report.xlsx | 151563 | 2016-03-14 09:14:57 |
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| report.css | 2768 | 2016-03-14 09:14:57 |
| Show.js | 1411 | 2016-03-14 09:14:57 |