Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001064728-23-000047-index-headers.html | 2023-05-04 16:10:45 | |
| 0001064728-23-000047-index.html | 2023-05-04 16:10:45 | |
| 0001064728-23-000047.txt | 2023-05-04 16:10:45 | |
 0001064728-23-000047-xbrl.zip | 11316 | 2023-05-04 16:10:45 |
| btu-20230504.htm | 55392 | 2023-05-04 16:10:45 |
| btu-20230504.xsd | 1927 | 2023-05-04 16:10:45 |
| btu-20230504_htm.xml | 11251 | 2023-05-04 16:10:45 |
| btu-20230504_lab.xml | 24137 | 2023-05-04 16:10:45 |
| btu-20230504_pre.xml | 12529 | 2023-05-04 16:10:45 |
| FilingSummary.xml | 1618 | 2023-05-04 16:10:45 |
| Financial_Report.xlsx | 5699 | 2023-05-04 16:10:45 |
| MetaLinks.json | 17258 | 2023-05-04 16:10:45 |
| R1.htm | 38094 | 2023-05-04 16:10:45 |
| report.css | 2766 | 2023-05-04 16:10:45 |
| Show.js | 1084 | 2023-05-04 16:10:45 |