Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-25-054049-index-headers.html | 2025-11-25 17:39:29 | |
| 0001628280-25-054049-index.html | 2025-11-25 17:39:29 | |
| 0001628280-25-054049.txt | 2025-11-25 17:39:29 | |
 0001628280-25-054049-xbrl.zip | 600892 | 2025-11-25 17:39:29 |
| a4q25exhibit10121.htm | 4054 | 2025-11-25 17:39:29 |
| a4q25exhibit211.htm | 23918 | 2025-11-25 17:39:29 |
| a4q25exhibit231.htm | 2131 | 2025-11-25 17:39:29 |
| a4q25exhibit311.htm | 9034 | 2025-11-25 17:39:29 |
| a4q25exhibit312.htm | 8916 | 2025-11-25 17:39:29 |
| a4q25exhibit321.htm | 4547 | 2025-11-25 17:39:29 |
| a4q25exhibit322.htm | 4471 | 2025-11-25 17:39:29 |
| atkr-20250930.htm | 2414475 | 2025-11-25 17:39:29 |
| atkr-20250930.xsd | 92663 | 2025-11-25 17:39:29 |
| atkr-20250930_cal.xml | 143906 | 2025-11-25 17:39:29 |
| atkr-20250930_def.xml | 465780 | 2025-11-25 17:39:29 |
 atkr-20250930_g1.jpg | 39266 | 2025-11-25 17:39:29 |
 atkr-20250930_g2.jpg | 131619 | 2025-11-25 17:39:29 |
| atkr-20250930_htm.xml | 2423719 | 2025-11-25 17:39:29 |
| atkr-20250930_lab.xml | 1147239 | 2025-11-25 17:39:29 |
| atkr-20250930_pre.xml | 880023 | 2025-11-25 17:39:29 |
| FilingSummary.xml | 70641 | 2025-11-25 17:39:29 |
| MetaLinks.json | 1527734 | 2025-11-25 17:39:29 |
| R1.htm | 65252 | 2025-11-25 17:39:29 |
| R10.htm | 129189 | 2025-11-25 17:39:29 |
| R100.htm | 76097 | 2025-11-25 17:39:29 |
| R101.htm | 12173 | 2025-11-25 17:39:29 |
| R102.htm | 17040 | 2025-11-25 17:39:29 |
| R103.htm | 22757 | 2025-11-25 17:39:29 |
| R104.htm | 9335 | 2025-11-25 17:39:29 |
| R105.htm | 8926 | 2025-11-25 17:39:29 |
| R106.htm | 22919 | 2025-11-25 17:39:29 |
| R107.htm | 25025 | 2025-11-25 17:39:29 |
| R108.htm | 32874 | 2025-11-25 17:39:29 |
| R109.htm | 41480 | 2025-11-25 17:39:29 |
| R11.htm | 15370 | 2025-11-25 17:39:29 |
| R110.htm | 26709 | 2025-11-25 17:39:29 |
| R111.htm | 21225 | 2025-11-25 17:39:29 |
| R112.htm | 30254 | 2025-11-25 17:39:29 |
| R113.htm | 12742 | 2025-11-25 17:39:29 |
| R114.htm | 60639 | 2025-11-25 17:39:29 |
| R115.htm | 16762 | 2025-11-25 17:39:29 |
| R116.htm | 29518 | 2025-11-25 17:39:29 |
| R117.htm | 36482 | 2025-11-25 17:39:29 |
| R118.htm | 25468 | 2025-11-25 17:39:29 |
| R119.htm | 15174 | 2025-11-25 17:39:29 |
| R12.htm | 8785 | 2025-11-25 17:39:29 |
| R13.htm | 104275 | 2025-11-25 17:39:29 |
| R14.htm | 113868 | 2025-11-25 17:39:29 |
| R15.htm | 19597 | 2025-11-25 17:39:29 |
| R16.htm | 121407 | 2025-11-25 17:39:29 |
| R17.htm | 28261 | 2025-11-25 17:39:29 |
| R18.htm | 35005 | 2025-11-25 17:39:29 |
| R19.htm | 13667 | 2025-11-25 17:39:29 |
| R2.htm | 7791 | 2025-11-25 17:39:29 |
| R20.htm | 20298 | 2025-11-25 17:39:29 |
| R21.htm | 56678 | 2025-11-25 17:39:29 |
| R22.htm | 36390 | 2025-11-25 17:39:29 |
| R23.htm | 42042 | 2025-11-25 17:39:29 |
| R24.htm | 17833 | 2025-11-25 17:39:29 |
| R25.htm | 9682 | 2025-11-25 17:39:29 |
| R26.htm | 158088 | 2025-11-25 17:39:29 |
| R27.htm | 7779 | 2025-11-25 17:39:29 |
| R28.htm | 70626 | 2025-11-25 17:39:29 |
| R29.htm | 25541 | 2025-11-25 17:39:29 |
| R3.htm | 89267 | 2025-11-25 17:39:29 |
| R30.htm | 8465 | 2025-11-25 17:39:29 |
| R31.htm | 4371 | 2025-11-25 17:39:29 |
| R32.htm | 46244 | 2025-11-25 17:39:29 |
| R33.htm | 101610 | 2025-11-25 17:39:29 |
| R34.htm | 21470 | 2025-11-25 17:39:29 |
| R35.htm | 80913 | 2025-11-25 17:39:29 |
| R36.htm | 11492 | 2025-11-25 17:39:29 |
| R37.htm | 104587 | 2025-11-25 17:39:29 |
| R38.htm | 107416 | 2025-11-25 17:39:29 |
| R39.htm | 18488 | 2025-11-25 17:39:29 |
| R4.htm | 33159 | 2025-11-25 17:39:29 |
| R40.htm | 119009 | 2025-11-25 17:39:29 |
| R41.htm | 26065 | 2025-11-25 17:39:29 |
| R42.htm | 35888 | 2025-11-25 17:39:29 |
| R43.htm | 12491 | 2025-11-25 17:39:29 |
| R44.htm | 21291 | 2025-11-25 17:39:29 |
| R45.htm | 89352 | 2025-11-25 17:39:29 |
| R46.htm | 24071 | 2025-11-25 17:39:29 |
| R47.htm | 33685 | 2025-11-25 17:39:29 |
| R48.htm | 144774 | 2025-11-25 17:39:29 |
| R49.htm | 22806 | 2025-11-25 17:39:29 |
| R5.htm | 117008 | 2025-11-25 17:39:29 |
| R50.htm | 15029 | 2025-11-25 17:39:29 |
| R51.htm | 17055 | 2025-11-25 17:39:29 |
| R52.htm | 28807 | 2025-11-25 17:39:29 |
| R53.htm | 13480 | 2025-11-25 17:39:29 |
| R54.htm | 39652 | 2025-11-25 17:39:29 |
| R55.htm | 38557 | 2025-11-25 17:39:29 |
| R56.htm | 12664 | 2025-11-25 17:39:29 |
| R57.htm | 50936 | 2025-11-25 17:39:29 |
| R58.htm | 13117 | 2025-11-25 17:39:29 |
| R59.htm | 50623 | 2025-11-25 17:39:29 |
| R6.htm | 14575 | 2025-11-25 17:39:29 |
| R60.htm | 16137 | 2025-11-25 17:39:29 |
| R61.htm | 20588 | 2025-11-25 17:39:29 |
| R62.htm | 21945 | 2025-11-25 17:39:29 |
| R63.htm | 53049 | 2025-11-25 17:39:29 |
| R64.htm | 14203 | 2025-11-25 17:39:29 |
| R65.htm | 55757 | 2025-11-25 17:39:29 |
| R66.htm | 14541 | 2025-11-25 17:39:29 |
| R67.htm | 27192 | 2025-11-25 17:39:29 |
| R68.htm | 15627 | 2025-11-25 17:39:29 |
| R69.htm | 24794 | 2025-11-25 17:39:29 |
| R7.htm | 117039 | 2025-11-25 17:39:29 |
| R70.htm | 20931 | 2025-11-25 17:39:29 |
| R71.htm | 50960 | 2025-11-25 17:39:29 |
| R72.htm | 24312 | 2025-11-25 17:39:29 |
| R73.htm | 21586 | 2025-11-25 17:39:29 |
| R74.htm | 29817 | 2025-11-25 17:39:29 |
| R75.htm | 25473 | 2025-11-25 17:39:29 |
| R76.htm | 23046 | 2025-11-25 17:39:29 |
| R77.htm | 35140 | 2025-11-25 17:39:29 |
| R78.htm | 13192 | 2025-11-25 17:39:29 |
| R79.htm | 4947 | 2025-11-25 17:39:29 |
| R8.htm | 64763 | 2025-11-25 17:39:29 |
| R80.htm | 45383 | 2025-11-25 17:39:29 |
| R81.htm | 51638 | 2025-11-25 17:39:29 |
| R82.htm | 39503 | 2025-11-25 17:39:29 |
| R83.htm | 34374 | 2025-11-25 17:39:29 |
| R84.htm | 17191 | 2025-11-25 17:39:29 |
| R85.htm | 63138 | 2025-11-25 17:39:29 |
| R86.htm | 28115 | 2025-11-25 17:39:29 |
| R87.htm | 12753 | 2025-11-25 17:39:29 |
| R88.htm | 9819 | 2025-11-25 17:39:29 |
| R89.htm | 11327 | 2025-11-25 17:39:29 |
| R9.htm | 60692 | 2025-11-25 17:39:29 |
| R90.htm | 23819 | 2025-11-25 17:39:29 |
| R91.htm | 21000 | 2025-11-25 17:39:29 |
| R92.htm | 24675 | 2025-11-25 17:39:29 |
| R93.htm | 40797 | 2025-11-25 17:39:29 |
| R94.htm | 34169 | 2025-11-25 17:39:29 |
| R95.htm | 18165 | 2025-11-25 17:39:29 |
| R96.htm | 30408 | 2025-11-25 17:39:29 |
| R97.htm | 24616 | 2025-11-25 17:39:29 |
| R98.htm | 18176 | 2025-11-25 17:39:29 |
| R99.htm | 55333 | 2025-11-25 17:39:29 |
| report.css | 2768 | 2025-11-25 17:39:29 |
| Show.js | 1086 | 2025-11-25 17:39:29 |