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| 0000789933-23-000054-index.html | 2023-11-01 16:40:59 | |
| 0000789933-23-000054.txt | 2023-11-01 16:40:59 | |
 0000789933-23-000054-xbrl.zip | 174969 | 2023-11-01 16:40:59 |
| exhibit311q323.htm | 11170 | 2023-11-01 16:40:59 |
| exhibit312q323.htm | 10930 | 2023-11-01 16:40:59 |
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| nacco-20230930.htm | 1181177 | 2023-11-01 16:40:59 |
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| report.css | 2767 | 2023-11-01 16:40:59 |
| Show.js | 1085 | 2023-11-01 16:40:59 |