Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-21-000978-index-headers.html | 2021-08-06 07:05:55 | |
| 0000950170-21-000978-index.html | 2021-08-06 07:05:55 | |
| 0000950170-21-000978.txt | 2021-08-06 07:05:55 | |
 0000950170-21-000978-xbrl.zip | 215743 | 2021-08-06 07:05:55 |
| FilingSummary.xml | 25809 | 2021-08-06 07:05:55 |
| Financial_Report.xlsx | 55178 | 2021-08-06 07:05:55 |
| md-20210630.htm | 1849944 | 2021-08-06 07:05:55 |
| md-20210630.xsd | 36459 | 2021-08-06 07:05:55 |
| md-20210630ex10_3.htm | 428746 | 2021-08-06 07:05:55 |
| md-20210630ex31_1.htm | 13656 | 2021-08-06 07:05:55 |
| md-20210630ex31_2.htm | 13621 | 2021-08-06 07:05:55 |
| md-20210630ex32_1.htm | 7371 | 2021-08-06 07:05:55 |
| md-20210630_cal.xml | 52441 | 2021-08-06 07:05:55 |
| md-20210630_def.xml | 113802 | 2021-08-06 07:05:55 |
| md-20210630_htm.xml | 784931 | 2021-08-06 07:05:55 |
| md-20210630_lab.xml | 336837 | 2021-08-06 07:05:55 |
| md-20210630_pre.xml | 231107 | 2021-08-06 07:05:55 |
| MetaLinks.json | 480690 | 2021-08-06 07:05:55 |
| R1.htm | 52200 | 2021-08-06 07:05:55 |
| R10.htm | 59095 | 2021-08-06 07:05:55 |
| R11.htm | 103448 | 2021-08-06 07:05:55 |
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| R18.htm | 5863 | 2021-08-06 07:05:55 |
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| R2.htm | 104085 | 2021-08-06 07:05:55 |
| R20.htm | 55379 | 2021-08-06 07:05:55 |
| R21.htm | 102957 | 2021-08-06 07:05:55 |
| R22.htm | 21699 | 2021-08-06 07:05:55 |
| R23.htm | 41001 | 2021-08-06 07:05:55 |
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| R27.htm | 14698 | 2021-08-06 07:05:55 |
| R28.htm | 11778 | 2021-08-06 07:05:55 |
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| R30.htm | 7443 | 2021-08-06 07:05:55 |
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| R36.htm | 2646 | 2021-08-06 07:05:55 |
| R37.htm | 14187 | 2021-08-06 07:05:55 |
| R38.htm | 52762 | 2021-08-06 07:05:55 |
| R39.htm | 19228 | 2021-08-06 07:05:55 |
| R4.htm | 126413 | 2021-08-06 07:05:55 |
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| R6.htm | 111893 | 2021-08-06 07:05:55 |
| R7.htm | 12671 | 2021-08-06 07:05:55 |
| R8.htm | 15066 | 2021-08-06 07:05:55 |
| R9.htm | 30896 | 2021-08-06 07:05:55 |
| report.css | 2767 | 2021-08-06 07:05:55 |
| Show.js | 1085 | 2021-08-06 07:05:55 |