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|---|---|---|
 0000789933-22-000063-index-headers.html | 2022-11-02 16:55:06 | |
| 0000789933-22-000063-index.html | 2022-11-02 16:55:06 | |
| 0000789933-22-000063.txt | 2022-11-02 16:55:06 | |
 0000789933-22-000063-xbrl.zip | 193902 | 2022-11-02 16:55:06 |
| exhibit10.htm | 1138 | 2022-11-02 16:55:06 |
 exhibit10001.jpg | 212564 | 2022-11-02 16:55:06 |
 exhibit10002.jpg | 34761 | 2022-11-02 16:55:06 |
 exhibit10003.jpg | 60162 | 2022-11-02 16:55:06 |
| exhibit311q322.htm | 11272 | 2022-11-02 16:55:06 |
| exhibit312q322.htm | 11025 | 2022-11-02 16:55:06 |
| exhibit32q322.htm | 8758 | 2022-11-02 16:55:06 |
| exhibit95q322.htm | 91814 | 2022-11-02 16:55:06 |
| FilingSummary.xml | 21074 | 2022-11-02 16:55:06 |
| Financial_Report.xlsx | 57313 | 2022-11-02 16:55:06 |
| MetaLinks.json | 397895 | 2022-11-02 16:55:06 |
| nacco-20220930.htm | 1382971 | 2022-11-02 16:55:06 |
| nacco-20220930.xsd | 25135 | 2022-11-02 16:55:06 |
| nacco-20220930_cal.xml | 46519 | 2022-11-02 16:55:06 |
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| nacco-20220930_htm.xml | 749528 | 2022-11-02 16:55:06 |
| nacco-20220930_lab.xml | 329085 | 2022-11-02 16:55:06 |
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| R1.htm | 56945 | 2022-11-02 16:55:06 |
| R10.htm | 28659 | 2022-11-02 16:55:06 |
| R11.htm | 45499 | 2022-11-02 16:55:06 |
| R12.htm | 10749 | 2022-11-02 16:55:06 |
| R13.htm | 10670 | 2022-11-02 16:55:06 |
| R14.htm | 42413 | 2022-11-02 16:55:06 |
| R15.htm | 8032 | 2022-11-02 16:55:06 |
| R16.htm | 7045 | 2022-11-02 16:55:06 |
| R17.htm | 76679 | 2022-11-02 16:55:06 |
| R18.htm | 6250 | 2022-11-02 16:55:06 |
| R19.htm | 30555 | 2022-11-02 16:55:06 |
| R2.htm | 126083 | 2022-11-02 16:55:06 |
| R20.htm | 11777 | 2022-11-02 16:55:06 |
| R21.htm | 33319 | 2022-11-02 16:55:06 |
| R22.htm | 71247 | 2022-11-02 16:55:06 |
| R23.htm | 27389 | 2022-11-02 16:55:06 |
| R24.htm | 10647 | 2022-11-02 16:55:06 |
| R25.htm | 12902 | 2022-11-02 16:55:06 |
| R26.htm | 25276 | 2022-11-02 16:55:06 |
| R27.htm | 15757 | 2022-11-02 16:55:06 |
| R28.htm | 8777 | 2022-11-02 16:55:06 |
| R29.htm | 5505 | 2022-11-02 16:55:06 |
| R3.htm | 10109 | 2022-11-02 16:55:06 |
| R30.htm | 16051 | 2022-11-02 16:55:06 |
| R31.htm | 41840 | 2022-11-02 16:55:06 |
| R32.htm | 12398 | 2022-11-02 16:55:06 |
| R33.htm | 33491 | 2022-11-02 16:55:06 |
| R4.htm | 96188 | 2022-11-02 16:55:06 |
| R5.htm | 25213 | 2022-11-02 16:55:06 |
| R6.htm | 5172 | 2022-11-02 16:55:06 |
| R7.htm | 33896 | 2022-11-02 16:55:06 |
| R8.htm | 54202 | 2022-11-02 16:55:06 |
| R9.htm | 5033 | 2022-11-02 16:55:06 |
| report.css | 2767 | 2022-11-02 16:55:06 |
| Show.js | 1085 | 2022-11-02 16:55:06 |