Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000731802-21-000040-index-headers.html | 2021-11-12 15:01:25 | |
| 0000731802-21-000040-index.html | 2021-11-12 15:01:25 | |
| 0000731802-21-000040.txt | 2021-11-12 15:01:25 | |
 0000731802-21-000040-xbrl.zip | 890301 | 2021-11-12 15:01:25 |
| ato-20210930.htm | 3968862 | 2021-11-12 15:01:25 |
| ato-20210930.xsd | 105433 | 2021-11-12 15:01:25 |
| ato-20210930_cal.xml | 175897 | 2021-11-12 15:01:25 |
| ato-20210930_def.xml | 511670 | 2021-11-12 15:01:25 |
 ato-20210930_g1.jpg | 181473 | 2021-11-12 15:01:25 |
 ato-20210930_g2.jpg | 48343 | 2021-11-12 15:01:25 |
 ato-20210930_g3.jpg | 35221 | 2021-11-12 15:01:25 |
 ato-20210930_g4.jpg | 53267 | 2021-11-12 15:01:25 |
 ato-20210930_g5.jpg | 112236 | 2021-11-12 15:01:25 |
| ato-20210930_htm.xml | 4039502 | 2021-11-12 15:01:25 |
| ato-20210930_lab.xml | 1200677 | 2021-11-12 15:01:25 |
| ato-20210930_pre.xml | 859125 | 2021-11-12 15:01:25 |
| ato2021930ex-21.htm | 22024 | 2021-11-12 15:01:25 |
| ato2021930ex-231.htm | 3353 | 2021-11-12 15:01:25 |
| ato2021930ex-31.htm | 18880 | 2021-11-12 15:01:25 |
| ato2021930ex-32.htm | 11399 | 2021-11-12 15:01:25 |
| ato2021930ex-41b.htm | 14326 | 2021-11-12 15:01:25 |
| FilingSummary.xml | 64893 | 2021-11-12 15:01:25 |
| Financial_Report.xlsx | 184656 | 2021-11-12 15:01:25 |
| MetaLinks.json | 1201712 | 2021-11-12 15:01:25 |
| R1.htm | 64624 | 2021-11-12 15:01:25 |
| R10.htm | 91045 | 2021-11-12 15:01:25 |
| R100.htm | 58990 | 2021-11-12 15:01:25 |
| R101.htm | 7671 | 2021-11-12 15:01:25 |
| R102.htm | 7184 | 2021-11-12 15:01:25 |
| R11.htm | 153400 | 2021-11-12 15:01:25 |
| R12.htm | 37355 | 2021-11-12 15:01:25 |
| R13.htm | 65674 | 2021-11-12 15:01:25 |
| R14.htm | 143305 | 2021-11-12 15:01:25 |
| R15.htm | 47936 | 2021-11-12 15:01:25 |
| R16.htm | 39606 | 2021-11-12 15:01:25 |
| R17.htm | 14569 | 2021-11-12 15:01:25 |
| R18.htm | 319891 | 2021-11-12 15:01:25 |
| R19.htm | 33159 | 2021-11-12 15:01:25 |
| R2.htm | 97962 | 2021-11-12 15:01:25 |
| R20.htm | 121825 | 2021-11-12 15:01:25 |
| R21.htm | 11983 | 2021-11-12 15:01:25 |
| R22.htm | 80652 | 2021-11-12 15:01:25 |
| R23.htm | 61238 | 2021-11-12 15:01:25 |
| R24.htm | 75180 | 2021-11-12 15:01:25 |
| R25.htm | 5249 | 2021-11-12 15:01:25 |
| R26.htm | 126970 | 2021-11-12 15:01:25 |
| R27.htm | 10390 | 2021-11-12 15:01:25 |
| R28.htm | 69757 | 2021-11-12 15:01:25 |
| R29.htm | 148814 | 2021-11-12 15:01:25 |
| R3.htm | 13334 | 2021-11-12 15:01:25 |
| R30.htm | 35744 | 2021-11-12 15:01:25 |
| R31.htm | 63364 | 2021-11-12 15:01:25 |
| R32.htm | 97253 | 2021-11-12 15:01:25 |
| R33.htm | 39786 | 2021-11-12 15:01:25 |
| R34.htm | 39021 | 2021-11-12 15:01:25 |
| R35.htm | 310548 | 2021-11-12 15:01:25 |
| R36.htm | 24277 | 2021-11-12 15:01:25 |
| R37.htm | 133689 | 2021-11-12 15:01:25 |
| R38.htm | 78805 | 2021-11-12 15:01:25 |
| R39.htm | 55210 | 2021-11-12 15:01:25 |
| R4.htm | 106413 | 2021-11-12 15:01:25 |
| R40.htm | 70752 | 2021-11-12 15:01:25 |
| R41.htm | 5766 | 2021-11-12 15:01:25 |
| R42.htm | 42462 | 2021-11-12 15:01:25 |
| R43.htm | 15758 | 2021-11-12 15:01:25 |
| R44.htm | 9865 | 2021-11-12 15:01:25 |
| R45.htm | 6464 | 2021-11-12 15:01:25 |
| R46.htm | 72554 | 2021-11-12 15:01:25 |
| R47.htm | 31712 | 2021-11-12 15:01:25 |
| R48.htm | 21237 | 2021-11-12 15:01:25 |
| R49.htm | 51782 | 2021-11-12 15:01:25 |
| R5.htm | 7671 | 2021-11-12 15:01:25 |
| R50.htm | 55184 | 2021-11-12 15:01:25 |
| R51.htm | 4248 | 2021-11-12 15:01:25 |
| R52.htm | 11946 | 2021-11-12 15:01:25 |
| R53.htm | 11633 | 2021-11-12 15:01:25 |
| R54.htm | 8473 | 2021-11-12 15:01:25 |
| R55.htm | 40445 | 2021-11-12 15:01:25 |
| R56.htm | 10991 | 2021-11-12 15:01:25 |
| R57.htm | 72285 | 2021-11-12 15:01:25 |
| R58.htm | 61655 | 2021-11-12 15:01:25 |
| R59.htm | 21972 | 2021-11-12 15:01:25 |
| R6.htm | 74231 | 2021-11-12 15:01:25 |
| R60.htm | 123234 | 2021-11-12 15:01:25 |
| R61.htm | 35885 | 2021-11-12 15:01:25 |
| R62.htm | 14872 | 2021-11-12 15:01:25 |
| R63.htm | 31395 | 2021-11-12 15:01:25 |
| R64.htm | 29927 | 2021-11-12 15:01:25 |
| R65.htm | 51423 | 2021-11-12 15:01:25 |
| R66.htm | 26927 | 2021-11-12 15:01:25 |
| R67.htm | 46388 | 2021-11-12 15:01:25 |
| R68.htm | 48608 | 2021-11-12 15:01:25 |
| R69.htm | 29055 | 2021-11-12 15:01:25 |
| R7.htm | 4628 | 2021-11-12 15:01:25 |
| R70.htm | 60235 | 2021-11-12 15:01:25 |
| R71.htm | 19391 | 2021-11-12 15:01:25 |
| R72.htm | 18525 | 2021-11-12 15:01:25 |
| R73.htm | 21276 | 2021-11-12 15:01:25 |
| R74.htm | 51197 | 2021-11-12 15:01:25 |
| R75.htm | 25264 | 2021-11-12 15:01:25 |
| R76.htm | 29581 | 2021-11-12 15:01:25 |
| R77.htm | 53343 | 2021-11-12 15:01:25 |
| R78.htm | 87925 | 2021-11-12 15:01:25 |
| R79.htm | 24880 | 2021-11-12 15:01:25 |
| R8.htm | 99082 | 2021-11-12 15:01:25 |
| R80.htm | 26464 | 2021-11-12 15:01:25 |
| R81.htm | 23863 | 2021-11-12 15:01:25 |
| R82.htm | 21277 | 2021-11-12 15:01:25 |
| R83.htm | 21714 | 2021-11-12 15:01:25 |
| R84.htm | 19392 | 2021-11-12 15:01:25 |
| R85.htm | 11560 | 2021-11-12 15:01:25 |
| R86.htm | 32271 | 2021-11-12 15:01:25 |
| R87.htm | 22828 | 2021-11-12 15:01:25 |
| R88.htm | 15493 | 2021-11-12 15:01:25 |
| R89.htm | 12163 | 2021-11-12 15:01:25 |
| R9.htm | 21044 | 2021-11-12 15:01:25 |
| R90.htm | 27491 | 2021-11-12 15:01:25 |
| R91.htm | 21159 | 2021-11-12 15:01:25 |
| R92.htm | 22683 | 2021-11-12 15:01:25 |
| R93.htm | 47952 | 2021-11-12 15:01:25 |
| R94.htm | 19553 | 2021-11-12 15:01:25 |
| R95.htm | 57920 | 2021-11-12 15:01:25 |
| R96.htm | 31493 | 2021-11-12 15:01:25 |
| R97.htm | 10627 | 2021-11-12 15:01:25 |
| R98.htm | 15264 | 2021-11-12 15:01:25 |
| R99.htm | 38253 | 2021-11-12 15:01:25 |
| report.css | 2768 | 2021-11-12 15:01:25 |
| Show.js | 1086 | 2021-11-12 15:01:25 |