Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-25-067521-index-headers.html | 2025-05-09 08:19:21 | |
| 0000950170-25-067521-index.html | 2025-05-09 08:19:21 | |
| 0000950170-25-067521.txt | 2025-05-09 08:19:21 | |
 0000950170-25-067521-xbrl.zip | 33816 | 2025-05-09 08:19:21 |
| FilingSummary.xml | 1656 | 2025-05-09 08:19:21 |
| Financial_Report.xlsx | 5753 | 2025-05-09 08:19:21 |
 img180885081_0.jpg | 126572 | 2025-05-09 08:19:21 |
| kop-20250508.htm | 79305 | 2025-05-09 08:19:21 |
| kop-20250508.xsd | 25026 | 2025-05-09 08:19:21 |
| kop-20250508_htm.xml | 4718 | 2025-05-09 08:19:21 |
| kop-ex99_1.htm | 715945 | 2025-05-09 08:19:21 |
| MetaLinks.json | 18013 | 2025-05-09 08:19:21 |
| R1.htm | 39666 | 2025-05-09 08:19:21 |
| report.css | 2766 | 2025-05-09 08:19:21 |
| Show.js | 1084 | 2025-05-09 08:19:21 |