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| 0000910638-18-000027-index.html | 2018-10-30 16:02:45 | |
| 0000910638-18-000027.txt | 2018-10-30 16:02:45 | |
 0000910638-18-000027-xbrl.zip | 165521 | 2018-10-30 16:02:45 |
| ddd-20180930.xml | 1295453 | 2018-10-30 16:02:45 |
| ddd-20180930.xsd | 34978 | 2018-10-30 16:02:45 |
| ddd-20180930_cal.xml | 76225 | 2018-10-30 16:02:45 |
| ddd-20180930_def.xml | 141705 | 2018-10-30 16:02:45 |
| ddd-20180930_lab.xml | 448250 | 2018-10-30 16:02:45 |
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| ddd2018-09x30form10xqdocum.htm | 1394050 | 2018-10-30 16:02:45 |
| ddd20180930ex311.htm | 14250 | 2018-10-30 16:02:45 |
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| ddd20180930ex321.htm | 6413 | 2018-10-30 16:02:45 |
| ddd20180930ex322.htm | 6412 | 2018-10-30 16:02:45 |
| FilingSummary.xml | 33618 | 2018-10-30 16:02:45 |
| Financial_Report.xlsx | 77030 | 2018-10-30 16:02:45 |
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| report.css | 2767 | 2018-10-30 16:02:45 |
| Show.js | 1085 | 2018-10-30 16:02:45 |