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| 0000950170-23-009098-index.html | 2023-03-22 12:50:58 | |
| 0000950170-23-009098.txt | 2023-03-22 12:50:58 | |
 0000950170-23-009098-xbrl.zip | 745616 | 2023-03-22 12:50:58 |
| ddl-20221231.htm | 7196086 | 2023-03-22 12:50:58 |
| ddl-20221231.xsd | 121439 | 2023-03-22 12:50:58 |
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| ddl-20221231_lab.xml | 788588 | 2023-03-22 12:50:58 |
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| ddl-ex12_2.htm | 15517 | 2023-03-22 12:50:58 |
| ddl-ex13_1.htm | 10349 | 2023-03-22 12:50:58 |
| ddl-ex13_2.htm | 10990 | 2023-03-22 12:50:58 |
| ddl-ex15_1.htm | 3531 | 2023-03-22 12:50:58 |
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| FilingSummary.xml | 63191 | 2023-03-22 12:50:58 |
| Financial_Report.xlsx | 198557 | 2023-03-22 12:50:58 |
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| report.css | 2768 | 2023-03-22 12:50:58 |
| Show.js | 1086 | 2023-03-22 12:50:58 |