Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-22-003961-index-headers.html | 2022-02-25 13:25:12 | |
| 0001628280-22-003961-index.html | 2022-02-25 13:25:12 | |
| 0001628280-22-003961.txt | 2022-02-25 13:25:12 | |
 0001628280-22-003961-xbrl.zip | 855361 | 2022-02-25 13:25:12 |
| ati-20211231.htm | 4711639 | 2022-02-25 13:25:12 |
| ati-20211231.xsd | 124045 | 2022-02-25 13:25:12 |
| ati-20211231_cal.xml | 144097 | 2022-02-25 13:25:12 |
| ati-20211231_def.xml | 891645 | 2022-02-25 13:25:12 |
 ati-20211231_g1.jpg | 107636 | 2022-02-25 13:25:12 |
| ati-20211231_htm.xml | 5161363 | 2022-02-25 13:25:12 |
| ati-20211231_lab.xml | 1493141 | 2022-02-25 13:25:12 |
| ati-20211231_pre.xml | 1228528 | 2022-02-25 13:25:12 |
| FilingSummary.xml | 72807 | 2022-02-25 13:25:12 |
| Financial_Report.xlsx | 238393 | 2022-02-25 13:25:12 |
| fy202110-k1015.htm | 87998 | 2022-02-25 13:25:12 |
| fy202110-k181.htm | 3587 | 2022-02-25 13:25:12 |
| fy202110-k311.htm | 9393 | 2022-02-25 13:25:12 |
| fy202110-k312.htm | 9614 | 2022-02-25 13:25:12 |
| fy202110-k321.htm | 9202 | 2022-02-25 13:25:12 |
| fy202110k211.htm | 8813 | 2022-02-25 13:25:12 |
| fy202110k231.htm | 5229 | 2022-02-25 13:25:12 |
| MetaLinks.json | 1406294 | 2022-02-25 13:25:12 |
| R1.htm | 63480 | 2022-02-25 13:25:12 |
| R10.htm | 121862 | 2022-02-25 13:25:12 |
| R100.htm | 14476 | 2022-02-25 13:25:12 |
| R101.htm | 11553 | 2022-02-25 13:25:12 |
| R102.htm | 33740 | 2022-02-25 13:25:12 |
| R103.htm | 68179 | 2022-02-25 13:25:12 |
| R104.htm | 24622 | 2022-02-25 13:25:12 |
| R105.htm | 42352 | 2022-02-25 13:25:12 |
| R106.htm | 69446 | 2022-02-25 13:25:12 |
| R107.htm | 61879 | 2022-02-25 13:25:12 |
| R108.htm | 109820 | 2022-02-25 13:25:12 |
| R109.htm | 22852 | 2022-02-25 13:25:12 |
| R11.htm | 22986 | 2022-02-25 13:25:12 |
| R110.htm | 12394 | 2022-02-25 13:25:12 |
| R111.htm | 28571 | 2022-02-25 13:25:12 |
| R112.htm | 29977 | 2022-02-25 13:25:12 |
| R113.htm | 78727 | 2022-02-25 13:25:12 |
| R114.htm | 34619 | 2022-02-25 13:25:12 |
| R115.htm | 9012 | 2022-02-25 13:25:12 |
| R116.htm | 40324 | 2022-02-25 13:25:12 |
| R117.htm | 26689 | 2022-02-25 13:25:12 |
| R118.htm | 50263 | 2022-02-25 13:25:12 |
| R119.htm | 20519 | 2022-02-25 13:25:12 |
| R12.htm | 25984 | 2022-02-25 13:25:12 |
| R120.htm | 55671 | 2022-02-25 13:25:12 |
| R121.htm | 36054 | 2022-02-25 13:25:12 |
| R13.htm | 204017 | 2022-02-25 13:25:12 |
| R14.htm | 15047 | 2022-02-25 13:25:12 |
| R15.htm | 24219 | 2022-02-25 13:25:12 |
| R16.htm | 8449 | 2022-02-25 13:25:12 |
| R17.htm | 15117 | 2022-02-25 13:25:12 |
| R18.htm | 16713 | 2022-02-25 13:25:12 |
| R19.htm | 29847 | 2022-02-25 13:25:12 |
| R2.htm | 7869 | 2022-02-25 13:25:12 |
| R20.htm | 70788 | 2022-02-25 13:25:12 |
| R21.htm | 105491 | 2022-02-25 13:25:12 |
| R22.htm | 57848 | 2022-02-25 13:25:12 |
| R23.htm | 38010 | 2022-02-25 13:25:12 |
| R24.htm | 306434 | 2022-02-25 13:25:12 |
| R25.htm | 138452 | 2022-02-25 13:25:12 |
| R26.htm | 57313 | 2022-02-25 13:25:12 |
| R27.htm | 141596 | 2022-02-25 13:25:12 |
| R28.htm | 33402 | 2022-02-25 13:25:12 |
| R29.htm | 12881 | 2022-02-25 13:25:12 |
| R3.htm | 102870 | 2022-02-25 13:25:12 |
| R30.htm | 110288 | 2022-02-25 13:25:12 |
| R31.htm | 11846 | 2022-02-25 13:25:12 |
| R32.htm | 7778 | 2022-02-25 13:25:12 |
| R33.htm | 92583 | 2022-02-25 13:25:12 |
| R34.htm | 119862 | 2022-02-25 13:25:12 |
| R35.htm | 14306 | 2022-02-25 13:25:12 |
| R36.htm | 19051 | 2022-02-25 13:25:12 |
| R37.htm | 202816 | 2022-02-25 13:25:12 |
| R38.htm | 14419 | 2022-02-25 13:25:12 |
| R39.htm | 25163 | 2022-02-25 13:25:12 |
| R4.htm | 69598 | 2022-02-25 13:25:12 |
| R40.htm | 14441 | 2022-02-25 13:25:12 |
| R41.htm | 30267 | 2022-02-25 13:25:12 |
| R42.htm | 43529 | 2022-02-25 13:25:12 |
| R43.htm | 57055 | 2022-02-25 13:25:12 |
| R44.htm | 52627 | 2022-02-25 13:25:12 |
| R45.htm | 32458 | 2022-02-25 13:25:12 |
| R46.htm | 312775 | 2022-02-25 13:25:12 |
| R47.htm | 138942 | 2022-02-25 13:25:12 |
| R48.htm | 40733 | 2022-02-25 13:25:12 |
| R49.htm | 138386 | 2022-02-25 13:25:12 |
| R5.htm | 121983 | 2022-02-25 13:25:12 |
| R50.htm | 32667 | 2022-02-25 13:25:12 |
| R51.htm | 16056 | 2022-02-25 13:25:12 |
| R52.htm | 10850 | 2022-02-25 13:25:12 |
| R53.htm | 161864 | 2022-02-25 13:25:12 |
| R54.htm | 5472 | 2022-02-25 13:25:12 |
| R55.htm | 14820 | 2022-02-25 13:25:12 |
| R56.htm | 8291 | 2022-02-25 13:25:12 |
| R57.htm | 32770 | 2022-02-25 13:25:12 |
| R58.htm | 59860 | 2022-02-25 13:25:12 |
| R59.htm | 23945 | 2022-02-25 13:25:12 |
| R6.htm | 19761 | 2022-02-25 13:25:12 |
| R60.htm | 45858 | 2022-02-25 13:25:12 |
| R61.htm | 18577 | 2022-02-25 13:25:12 |
| R62.htm | 23504 | 2022-02-25 13:25:12 |
| R63.htm | 31935 | 2022-02-25 13:25:12 |
| R64.htm | 55964 | 2022-02-25 13:25:12 |
| R65.htm | 44518 | 2022-02-25 13:25:12 |
| R66.htm | 36299 | 2022-02-25 13:25:12 |
| R67.htm | 53797 | 2022-02-25 13:25:12 |
| R68.htm | 124010 | 2022-02-25 13:25:12 |
| R69.htm | 10378 | 2022-02-25 13:25:12 |
| R7.htm | 89863 | 2022-02-25 13:25:12 |
| R70.htm | 51389 | 2022-02-25 13:25:12 |
| R71.htm | 14940 | 2022-02-25 13:25:12 |
| R72.htm | 31846 | 2022-02-25 13:25:12 |
| R73.htm | 46910 | 2022-02-25 13:25:12 |
| R74.htm | 75080 | 2022-02-25 13:25:12 |
| R75.htm | 11740 | 2022-02-25 13:25:12 |
| R76.htm | 13367 | 2022-02-25 13:25:12 |
| R77.htm | 10666 | 2022-02-25 13:25:12 |
| R78.htm | 7676 | 2022-02-25 13:25:12 |
| R79.htm | 25900 | 2022-02-25 13:25:12 |
| R8.htm | 70820 | 2022-02-25 13:25:12 |
| R80.htm | 89482 | 2022-02-25 13:25:12 |
| R81.htm | 266132 | 2022-02-25 13:25:12 |
| R82.htm | 13691 | 2022-02-25 13:25:12 |
| R83.htm | 45784 | 2022-02-25 13:25:12 |
| R84.htm | 20526 | 2022-02-25 13:25:12 |
| R85.htm | 22607 | 2022-02-25 13:25:12 |
| R86.htm | 35782 | 2022-02-25 13:25:12 |
| R87.htm | 29119 | 2022-02-25 13:25:12 |
| R88.htm | 34494 | 2022-02-25 13:25:12 |
| R89.htm | 32379 | 2022-02-25 13:25:12 |
| R9.htm | 138817 | 2022-02-25 13:25:12 |
| R90.htm | 20186 | 2022-02-25 13:25:12 |
| R91.htm | 143563 | 2022-02-25 13:25:12 |
| R92.htm | 37527 | 2022-02-25 13:25:12 |
| R93.htm | 18815 | 2022-02-25 13:25:12 |
| R94.htm | 15025 | 2022-02-25 13:25:12 |
| R95.htm | 38126 | 2022-02-25 13:25:12 |
| R96.htm | 22018 | 2022-02-25 13:25:12 |
| R97.htm | 19742 | 2022-02-25 13:25:12 |
| R98.htm | 29950 | 2022-02-25 13:25:12 |
| R99.htm | 20210 | 2022-02-25 13:25:12 |
| report.css | 2768 | 2022-02-25 13:25:12 |
| Show.js | 1086 | 2022-02-25 13:25:12 |