Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-24-056901-index-headers.html | 2024-05-09 16:05:59 | |
| 0000950170-24-056901-index.html | 2024-05-09 16:05:59 | |
| 0000950170-24-056901.txt | 2024-05-09 16:05:59 | |
 0000950170-24-056901-xbrl.zip | 20076 | 2024-05-09 16:05:59 |
| atra-20240509.htm | 42567 | 2024-05-09 16:05:59 |
| atra-20240509.xsd | 26006 | 2024-05-09 16:05:59 |
| atra-20240509_htm.xml | 4892 | 2024-05-09 16:05:59 |
| atra-ex99_1.htm | 221904 | 2024-05-09 16:05:59 |
| FilingSummary.xml | 1664 | 2024-05-09 16:05:59 |
| Financial_Report.xlsx | 5783 | 2024-05-09 16:05:59 |
| MetaLinks.json | 18516 | 2024-05-09 16:05:59 |
| R1.htm | 41253 | 2024-05-09 16:05:59 |
| report.css | 2766 | 2024-05-09 16:05:59 |
| Show.js | 1084 | 2024-05-09 16:05:59 |