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| 0000731802-18-000005-index.html | 2018-02-06 17:09:44 | |
| 0000731802-18-000005.txt | 2018-02-06 17:09:44 | |
 0000731802-18-000005-xbrl.zip | 225377 | 2018-02-06 17:09:44 |
| ato-20171231.xml | 1908531 | 2018-02-06 17:09:44 |
| ato-20171231.xsd | 56963 | 2018-02-06 17:09:44 |
| ato-20171231_cal.xml | 87416 | 2018-02-06 17:09:44 |
| ato-20171231_def.xml | 253712 | 2018-02-06 17:09:44 |
| ato-20171231_lab.xml | 735183 | 2018-02-06 17:09:44 |
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| ato2017123110-q.htm | 1300320 | 2018-02-06 17:09:44 |
| ato20171231ex-12.htm | 24568 | 2018-02-06 17:09:44 |
| ato20171231ex-15.htm | 3790 | 2018-02-06 17:09:44 |
| ato20171231ex-31.htm | 27019 | 2018-02-06 17:09:44 |
| ato20171231ex-32.htm | 14390 | 2018-02-06 17:09:44 |
| FilingSummary.xml | 28880 | 2018-02-06 17:09:44 |
| Financial_Report.xlsx | 72912 | 2018-02-06 17:09:44 |
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| report.css | 2767 | 2018-02-06 17:09:44 |
| Show.js | 1410 | 2018-02-06 17:09:44 |