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| 0000909108-24-000033-index.html | 2024-07-31 16:03:44 | |
| 0000909108-24-000033.txt | 2024-07-31 16:03:44 | |
 0000909108-24-000033-xbrl.zip | 604476 | 2024-07-31 16:03:44 |
| dhil-20240630.htm | 1141295 | 2024-07-31 16:03:44 |
| dhil-20240630.xsd | 35445 | 2024-07-31 16:03:44 |
| dhil-20240630_cal.xml | 54521 | 2024-07-31 16:03:44 |
| dhil-20240630_def.xml | 151990 | 2024-07-31 16:03:44 |
 dhil-20240630_g1.jpg | 615960 | 2024-07-31 16:03:44 |
| dhil-20240630_htm.xml | 657090 | 2024-07-31 16:03:44 |
| dhil-20240630_lab.xml | 481490 | 2024-07-31 16:03:44 |
| dhil-20240630_pre.xml | 329104 | 2024-07-31 16:03:44 |
| ex-311x20240630.htm | 9918 | 2024-07-31 16:03:44 |
| ex-312x20240630.htm | 9872 | 2024-07-31 16:03:44 |
| ex-321x20240630.htm | 5659 | 2024-07-31 16:03:44 |
| FilingSummary.xml | 28315 | 2024-07-31 16:03:44 |
| Financial_Report.xlsx | 74491 | 2024-07-31 16:03:44 |
| MetaLinks.json | 704285 | 2024-07-31 16:03:44 |
| R1.htm | 51552 | 2024-07-31 16:03:44 |
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| R9.htm | 6522 | 2024-07-31 16:03:44 |
| report.css | 2767 | 2024-07-31 16:03:44 |
| Show.js | 1085 | 2024-07-31 16:03:44 |