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| 0001368148-20-000020-index.html | 2020-03-16 16:40:08 | |
| 0001368148-20-000020.txt | 2020-03-16 16:40:08 | |
 0001368148-20-000020-xbrl.zip | 190042 | 2020-03-16 16:40:08 |
| athx-20191231.xml | 1063432 | 2020-03-16 16:40:08 |
| athx-20191231.xsd | 47261 | 2020-03-16 16:40:08 |
| athx-20191231x10k.htm | 1362518 | 2020-03-16 16:40:08 |
| athx-20191231_cal.xml | 64295 | 2020-03-16 16:40:08 |
| athx-20191231_def.xml | 251463 | 2020-03-16 16:40:08 |
| athx-20191231_lab.xml | 623809 | 2020-03-16 16:40:08 |
| athx-20191231_pre.xml | 360575 | 2020-03-16 16:40:08 |
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| ex4320191231.htm | 7339 | 2020-03-16 16:40:08 |
| FilingSummary.xml | 31825 | 2020-03-16 16:40:08 |
| Financial_Report.xlsx | 78886 | 2020-03-16 16:40:08 |
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| report.css | 2767 | 2020-03-16 16:40:08 |
| Show.js | 1085 | 2020-03-16 16:40:08 |