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| 0000006955-18-000027-index.html | 2018-07-09 17:14:34 | |
| 0000006955-18-000027.txt | 2018-07-09 17:14:34 | |
 0000006955-18-000027-xbrl.zip | 238314 | 2018-07-09 17:14:34 |
| atu-20180531.xml | 2854547 | 2018-07-09 17:14:34 |
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| atu-20180531exhibit101.htm | 23680 | 2018-07-09 17:14:34 |
| atu-20180531exhibit311.htm | 12989 | 2018-07-09 17:14:34 |
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| atu-20180531exhibit321.htm | 4652 | 2018-07-09 17:14:34 |
| atu-20180531exhibit322.htm | 4665 | 2018-07-09 17:14:34 |
| atu-20180531x10q.htm | 1525771 | 2018-07-09 17:14:34 |
| atu-20180531_cal.xml | 82427 | 2018-07-09 17:14:34 |
| atu-20180531_def.xml | 291377 | 2018-07-09 17:14:34 |
| atu-20180531_lab.xml | 549263 | 2018-07-09 17:14:34 |
| atu-20180531_pre.xml | 397642 | 2018-07-09 17:14:34 |
| FilingSummary.xml | 32373 | 2018-07-09 17:14:34 |
| Financial_Report.xlsx | 78921 | 2018-07-09 17:14:34 |
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| report.css | 2767 | 2018-07-09 17:14:34 |
| Show.js | 1410 | 2018-07-09 17:14:34 |