Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000910638-20-000017-index-headers.html | 2020-05-06 16:04:01 | |
| 0000910638-20-000017-index.html | 2020-05-06 16:04:01 | |
| 0000910638-20-000017.txt | 2020-05-06 16:04:01 | |
 0000910638-20-000017-xbrl.zip | 32799 | 2020-05-06 16:04:01 |
| ddd-20200506.htm | 44810 | 2020-05-06 16:04:01 |
| ddd-20200506.xsd | 2659 | 2020-05-06 16:04:01 |
| ddd-20200506_cal.xml | 804 | 2020-05-06 16:04:01 |
| ddd-20200506_def.xml | 1768 | 2020-05-06 16:04:01 |
| ddd-20200506_htm.xml | 10740 | 2020-05-06 16:04:01 |
| ddd-20200506_lab.xml | 24270 | 2020-05-06 16:04:01 |
| ddd-20200506_pre.xml | 12740 | 2020-05-06 16:04:01 |
| ddd2020-03x31earningsr.htm | 262797 | 2020-05-06 16:04:01 |
| ddd20200331ex992.htm | 58796 | 2020-05-06 16:04:01 |
 ddd20200331ex992001.jpg | 59711 | 2020-05-06 16:04:01 |
 ddd20200331ex992002.jpg | 65297 | 2020-05-06 16:04:01 |
 ddd20200331ex992003.jpg | 199498 | 2020-05-06 16:04:01 |
 ddd20200331ex992004.jpg | 36329 | 2020-05-06 16:04:01 |
 ddd20200331ex992005.jpg | 65918 | 2020-05-06 16:04:01 |
 ddd20200331ex992006.jpg | 90340 | 2020-05-06 16:04:01 |
 ddd20200331ex992007.jpg | 97845 | 2020-05-06 16:04:01 |
 ddd20200331ex992008.jpg | 110407 | 2020-05-06 16:04:01 |
 ddd20200331ex992009.jpg | 97634 | 2020-05-06 16:04:01 |
 ddd20200331ex992010.jpg | 84068 | 2020-05-06 16:04:01 |
 ddd20200331ex992011.jpg | 104915 | 2020-05-06 16:04:01 |
 ddd20200331ex992012.jpg | 69661 | 2020-05-06 16:04:01 |
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 ddd20200331ex992016.jpg | 35329 | 2020-05-06 16:04:01 |
 ddd20200331ex992017.jpg | 92337 | 2020-05-06 16:04:01 |
 ddd20200331ex992018.jpg | 117288 | 2020-05-06 16:04:01 |
 ddd20200331ex992019.jpg | 64203 | 2020-05-06 16:04:01 |
 ddd20200331ex992020.jpg | 68758 | 2020-05-06 16:04:01 |
 ddd20200331ex992021.jpg | 96330 | 2020-05-06 16:04:01 |
 ddd20200331ex992022.jpg | 83352 | 2020-05-06 16:04:01 |
 ddd20200331ex992023.jpg | 36347 | 2020-05-06 16:04:01 |
 ddd20200331ex992024.jpg | 105567 | 2020-05-06 16:04:01 |
 ddd20200331ex992025.jpg | 32846 | 2020-05-06 16:04:01 |
 ddd20200331ex992026.jpg | 42857 | 2020-05-06 16:04:01 |
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 ddd20200331ex992028.jpg | 126576 | 2020-05-06 16:04:01 |
 ddd20200331ex992029.jpg | 143239 | 2020-05-06 16:04:01 |
 ddd20200331ex992030.jpg | 68447 | 2020-05-06 16:04:01 |
 ddd20200331ex992031.jpg | 86231 | 2020-05-06 16:04:01 |
 ddd20200331ex992032.jpg | 93217 | 2020-05-06 16:04:01 |
 ddd20200331ex992033.jpg | 91811 | 2020-05-06 16:04:01 |
 ddd20200331ex992034.jpg | 115746 | 2020-05-06 16:04:01 |
 ddd20200331ex992035.jpg | 148617 | 2020-05-06 16:04:01 |
 ddd20200331ex992036.jpg | 42856 | 2020-05-06 16:04:01 |
| FilingSummary.xml | 1853 | 2020-05-06 16:04:01 |
| Financial_Report.xlsx | 5801 | 2020-05-06 16:04:01 |
| MetaLinks.json | 18706 | 2020-05-06 16:04:01 |
| R1.htm | 38634 | 2020-05-06 16:04:01 |
| report.css | 2767 | 2020-05-06 16:04:01 |
| Show.js | 1085 | 2020-05-06 16:04:01 |