Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-134447-index-headers.html | 2020-05-06 09:17:15 | |
| 0001193125-20-134447-index.html | 2020-05-06 09:17:15 | |
| 0001193125-20-134447.txt | 2020-05-06 09:17:15 | |
 0001193125-20-134447-xbrl.zip | 15578 | 2020-05-06 09:17:15 |
| d925604d8k.htm | 38416 | 2020-05-06 09:17:15 |
| d925604d8k_htm.xml | 3245 | 2020-05-06 09:17:15 |
| d925604dex991.htm | 14162 | 2020-05-06 09:17:15 |
| FilingSummary.xml | 1719 | 2020-05-06 09:17:15 |
| Financial_Report.xlsx | 5792 | 2020-05-06 09:17:15 |
 g9256041img.jpg | 23221 | 2020-05-06 09:17:15 |
| md-20200506.xsd | 3056 | 2020-05-06 09:17:15 |
| md-20200506_lab.xml | 17372 | 2020-05-06 09:17:15 |
| md-20200506_pre.xml | 10945 | 2020-05-06 09:17:15 |
| MetaLinks.json | 18188 | 2020-05-06 09:17:15 |
| R1.htm | 38633 | 2020-05-06 09:17:15 |
| report.css | 2767 | 2020-05-06 09:17:15 |
| Show.js | 1085 | 2020-05-06 09:17:15 |