Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-25-106533-index-headers.html | 2025-08-11 16:05:30 | |
| 0000950170-25-106533-index.html | 2025-08-11 16:05:30 | |
| 0000950170-25-106533.txt | 2025-08-11 16:05:30 | |
 0000950170-25-106533-xbrl.zip | 7538 | 2025-08-11 16:05:30 |
| atra-20250811.htm | 48048 | 2025-08-11 16:05:30 |
| atra-20250811.xsd | 23888 | 2025-08-11 16:05:30 |
| atra-20250811_htm.xml | 4539 | 2025-08-11 16:05:30 |
| atra-ex99_1.htm | 282260 | 2025-08-11 16:05:30 |
| FilingSummary.xml | 1661 | 2025-08-11 16:05:30 |
| MetaLinks.json | 17461 | 2025-08-11 16:05:30 |
| R1.htm | 38111 | 2025-08-11 16:05:30 |
| report.css | 2766 | 2025-08-11 16:05:30 |
| Show.js | 1084 | 2025-08-11 16:05:30 |