Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000949157-17-000044-index-headers.html | 2017-05-09 16:11:52 | |
| 0000949157-17-000044-index.html | 2017-05-09 16:11:52 | |
| 0000949157-17-000044.txt | 2017-05-09 16:11:52 | |
 0000949157-17-000044-xbrl.zip | 143948 | 2017-05-09 16:11:52 |
| a20170331q110-q.htm | 690432 | 2017-05-09 16:11:52 |
| a20170331q1ex311.htm | 14127 | 2017-05-09 16:11:52 |
| a20170331q1ex321.htm | 7592 | 2017-05-09 16:11:52 |
 centuryheaderlogoa18.jpg | 7822 | 2017-05-09 16:11:52 |
| cenx-20160930.xml | 796367 | 2017-05-09 16:11:52 |
| cenx-20160930.xsd | 37863 | 2017-05-09 16:11:52 |
| cenx-20160930_cal.xml | 72335 | 2017-05-09 16:11:52 |
| cenx-20160930_def.xml | 165146 | 2017-05-09 16:11:52 |
| cenx-20160930_lab.xml | 508626 | 2017-05-09 16:11:52 |
| cenx-20160930_pre.xml | 277949 | 2017-05-09 16:11:52 |
| FilingSummary.xml | 27698 | 2017-05-09 16:11:52 |
| Financial_Report.xlsx | 55675 | 2017-05-09 16:11:52 |
| R1.htm | 20402 | 2017-05-09 16:11:52 |
| R10.htm | 74829 | 2017-05-09 16:11:52 |
| R11.htm | 31116 | 2017-05-09 16:11:52 |
| R12.htm | 39292 | 2017-05-09 16:11:52 |
| R13.htm | 7499 | 2017-05-09 16:11:52 |
| R14.htm | 14904 | 2017-05-09 16:11:52 |
| R15.htm | 29541 | 2017-05-09 16:11:52 |
| R16.htm | 28409 | 2017-05-09 16:11:52 |
| R17.htm | 57389 | 2017-05-09 16:11:52 |
| R18.htm | 32588 | 2017-05-09 16:11:52 |
| R19.htm | 11132 | 2017-05-09 16:11:52 |
| R2.htm | 49416 | 2017-05-09 16:11:52 |
| R20.htm | 13114 | 2017-05-09 16:11:52 |
| R21.htm | 4932 | 2017-05-09 16:11:52 |
| R22.htm | 12530 | 2017-05-09 16:11:52 |
| R23.htm | 73174 | 2017-05-09 16:11:52 |
| R24.htm | 31465 | 2017-05-09 16:11:52 |
| R25.htm | 26192 | 2017-05-09 16:11:52 |
| R26.htm | 15025 | 2017-05-09 16:11:52 |
| R27.htm | 26204 | 2017-05-09 16:11:52 |
| R28.htm | 56620 | 2017-05-09 16:11:52 |
| R29.htm | 30411 | 2017-05-09 16:11:52 |
| R3.htm | 27642 | 2017-05-09 16:11:52 |
| R30.htm | 9843 | 2017-05-09 16:11:52 |
| R31.htm | 18159 | 2017-05-09 16:11:52 |
| R32.htm | 13261 | 2017-05-09 16:11:52 |
| R33.htm | 6486 | 2017-05-09 16:11:52 |
| R34.htm | 21400 | 2017-05-09 16:11:52 |
| R35.htm | 37558 | 2017-05-09 16:11:52 |
| R36.htm | 24045 | 2017-05-09 16:11:52 |
| R37.htm | 56800 | 2017-05-09 16:11:52 |
| R38.htm | 4936 | 2017-05-09 16:11:52 |
| R39.htm | 14555 | 2017-05-09 16:11:52 |
| R4.htm | 88463 | 2017-05-09 16:11:52 |
| R40.htm | 25807 | 2017-05-09 16:11:52 |
| R41.htm | 36054 | 2017-05-09 16:11:52 |
| R42.htm | 68065 | 2017-05-09 16:11:52 |
| R43.htm | 29156 | 2017-05-09 16:11:52 |
| R44.htm | 23169 | 2017-05-09 16:11:52 |
| R45.htm | 25375 | 2017-05-09 16:11:52 |
| R46.htm | 6741 | 2017-05-09 16:11:52 |
| R47.htm | 28517 | 2017-05-09 16:11:52 |
| R5.htm | 75996 | 2017-05-09 16:11:52 |
| R6.htm | 7813 | 2017-05-09 16:11:52 |
| R7.htm | 21098 | 2017-05-09 16:11:52 |
| R8.htm | 5387 | 2017-05-09 16:11:52 |
| R9.htm | 11079 | 2017-05-09 16:11:52 |
| report.css | 2767 | 2017-05-09 16:11:52 |
| revolverloanamendmentexhib.htm | 131344 | 2017-05-09 16:11:52 |
| Show.js | 1410 | 2017-05-09 16:11:52 |