Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-24-164554-index-headers.html | 2024-06-20 17:04:31 | |
| 0001193125-24-164554-index.html | 2024-06-20 17:04:31 | |
| 0001193125-24-164554.txt | 2024-06-20 17:04:31 | |
 0001193125-24-164554-xbrl.zip | 11095 | 2024-06-20 17:04:31 |
| atra-20240620.xsd | 2853 | 2024-06-20 17:04:31 |
| atra-20240620_lab.xml | 18739 | 2024-06-20 17:04:31 |
| atra-20240620_pre.xml | 11709 | 2024-06-20 17:04:31 |
| d843613d8k.htm | 28837 | 2024-06-20 17:04:31 |
| d843613d8k_htm.xml | 3859 | 2024-06-20 17:04:31 |
| d843613dex31.htm | 7498 | 2024-06-20 17:04:31 |
| FilingSummary.xml | 1719 | 2024-06-20 17:04:31 |
| Financial_Report.xlsx | 5762 | 2024-06-20 17:04:31 |
| MetaLinks.json | 19456 | 2024-06-20 17:04:31 |
| R1.htm | 41164 | 2024-06-20 17:04:31 |
| report.css | 2767 | 2024-06-20 17:04:31 |
| Show.js | 1084 | 2024-06-20 17:04:31 |