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| 0000789933-17-000043-index.html | 2017-08-01 17:20:33 | |
| 0000789933-17-000043.txt | 2017-08-01 17:20:33 | |
 0000789933-17-000043-xbrl.zip | 103249 | 2017-08-01 17:20:33 |
| exhibit101q217.htm | 22617 | 2017-08-01 17:20:33 |
| exhibit102q217.htm | 21705 | 2017-08-01 17:20:33 |
| exhibit311q217.htm | 14754 | 2017-08-01 17:20:33 |
| exhibit312q217.htm | 14722 | 2017-08-01 17:20:33 |
| exhibit32q217.htm | 11421 | 2017-08-01 17:20:33 |
| exhibit95q217.htm | 101323 | 2017-08-01 17:20:33 |
| FilingSummary.xml | 18406 | 2017-08-01 17:20:33 |
| Financial_Report.xlsx | 38314 | 2017-08-01 17:20:33 |
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| nacco-20170630.xsd | 19478 | 2017-08-01 17:20:33 |
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| nacco-20170630_lab.xml | 311616 | 2017-08-01 17:20:33 |
| nacco-20170630_pre.xml | 183651 | 2017-08-01 17:20:33 |
| nc630201710-q.htm | 1388683 | 2017-08-01 17:20:33 |
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| R10.htm | 17490 | 2017-08-01 17:20:33 |
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| R9.htm | 4518 | 2017-08-01 17:20:33 |
| report.css | 2767 | 2017-08-01 17:20:33 |
| Show.js | 1410 | 2017-08-01 17:20:33 |