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| 0000731802-17-000008-index.html | 2017-02-07 17:10:46 | |
| 0000731802-17-000008.txt | 2017-02-07 17:10:46 | |
 0000731802-17-000008-xbrl.zip | 258554 | 2017-02-07 17:10:46 |
| ato-20161231.xml | 2888020 | 2017-02-07 17:10:46 |
| ato-20161231.xsd | 55437 | 2017-02-07 17:10:46 |
| ato-20161231_cal.xml | 109392 | 2017-02-07 17:10:46 |
| ato-20161231_def.xml | 268715 | 2017-02-07 17:10:46 |
| ato-20161231_lab.xml | 769403 | 2017-02-07 17:10:46 |
| ato-20161231_pre.xml | 418805 | 2017-02-07 17:10:46 |
| ato2016123110-q.htm | 1671525 | 2017-02-07 17:10:46 |
| ato20161231ex-12.htm | 24801 | 2017-02-07 17:10:46 |
| ato20161231ex-15.htm | 3489 | 2017-02-07 17:10:46 |
| ato20161231ex-31.htm | 26323 | 2017-02-07 17:10:46 |
| ato20161231ex-32.htm | 13917 | 2017-02-07 17:10:46 |
| FilingSummary.xml | 27531 | 2017-02-07 17:10:46 |
| Financial_Report.xlsx | 81037 | 2017-02-07 17:10:46 |
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| report.css | 2767 | 2017-02-07 17:10:46 |
| Show.js | 1410 | 2017-02-07 17:10:46 |