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|---|---|---|
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| 0000910638-18-000011-index.html | 2018-05-02 16:02:01 | |
| 0000910638-18-000011.txt | 2018-05-02 16:02:01 | |
 0000910638-18-000011-xbrl.zip | 138343 | 2018-05-02 16:02:01 |
| ddd-20180331.xml | 928166 | 2018-05-02 16:02:01 |
| ddd-20180331.xsd | 39079 | 2018-05-02 16:02:01 |
| ddd-20180331_cal.xml | 78296 | 2018-05-02 16:02:01 |
| ddd-20180331_def.xml | 112598 | 2018-05-02 16:02:01 |
| ddd-20180331_lab.xml | 422502 | 2018-05-02 16:02:01 |
| ddd-20180331_pre.xml | 249071 | 2018-05-02 16:02:01 |
| ddd2018-03x31form10xqdocum.htm | 1017944 | 2018-05-02 16:02:01 |
| ddd20180331ex311.htm | 14245 | 2018-05-02 16:02:01 |
| ddd20180331ex312.htm | 14618 | 2018-05-02 16:02:01 |
| ddd20180331ex321.htm | 6290 | 2018-05-02 16:02:01 |
| ddd20180331ex322.htm | 6289 | 2018-05-02 16:02:01 |
| ddd20180331ex41.htm | 45082 | 2018-05-02 16:02:01 |
| FilingSummary.xml | 34136 | 2018-05-02 16:02:01 |
| Financial_Report.xlsx | 69752 | 2018-05-02 16:02:01 |
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| report.css | 2767 | 2018-05-02 16:02:01 |
| Show.js | 1410 | 2018-05-02 16:02:01 |