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|---|---|---|
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| 0000910638-18-000021-index.html | 2018-08-07 16:07:46 | |
| 0000910638-18-000021.txt | 2018-08-07 16:07:46 | |
 0000910638-18-000021-xbrl.zip | 149798 | 2018-08-07 16:07:46 |
| ddd-20180630.xml | 1217655 | 2018-08-07 16:07:46 |
| ddd-20180630.xsd | 34832 | 2018-08-07 16:07:46 |
| ddd-20180630_cal.xml | 76322 | 2018-08-07 16:07:46 |
| ddd-20180630_def.xml | 128303 | 2018-08-07 16:07:46 |
| ddd-20180630_lab.xml | 423178 | 2018-08-07 16:07:46 |
| ddd-20180630_pre.xml | 254560 | 2018-08-07 16:07:46 |
| ddd2018-06x30form10xqdocum.htm | 1361223 | 2018-08-07 16:07:46 |
| ddd20180630ex311.htm | 14248 | 2018-08-07 16:07:46 |
| ddd20180630ex312.htm | 14621 | 2018-08-07 16:07:46 |
| ddd20180630ex321.htm | 6406 | 2018-08-07 16:07:46 |
| ddd20180630ex322.htm | 6405 | 2018-08-07 16:07:46 |
| FilingSummary.xml | 33529 | 2018-08-07 16:07:46 |
| Financial_Report.xlsx | 72811 | 2018-08-07 16:07:46 |
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| report.css | 2767 | 2018-08-07 16:07:46 |
| Show.js | 1410 | 2018-08-07 16:07:46 |