Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-20-053574-index-headers.html | 2020-11-12 16:16:29 | |
| 0001564590-20-053574-index.html | 2020-11-12 16:16:29 | |
| 0001564590-20-053574.txt | 2020-11-12 16:16:29 | |
 0001564590-20-053574-xbrl.zip | 137687 | 2020-11-12 16:16:29 |
| atha-10q_20200930.htm | 2947651 | 2020-11-12 16:16:29 |
| atha-20200930.xml | 1632938 | 2020-11-12 16:16:29 |
| atha-20200930.xsd | 61178 | 2020-11-12 16:16:29 |
| atha-20200930_cal.xml | 48582 | 2020-11-12 16:16:29 |
| atha-20200930_def.xml | 192514 | 2020-11-12 16:16:29 |
| atha-20200930_lab.xml | 476261 | 2020-11-12 16:16:29 |
| atha-20200930_pre.xml | 358508 | 2020-11-12 16:16:29 |
| atha-ex311_6.htm | 16012 | 2020-11-12 16:16:29 |
| atha-ex312_7.htm | 16143 | 2020-11-12 16:16:29 |
| atha-ex31_153.htm | 38821 | 2020-11-12 16:16:29 |
| atha-ex321_8.htm | 9334 | 2020-11-12 16:16:29 |
| atha-ex322_9.htm | 9123 | 2020-11-12 16:16:29 |
| atha-ex32_154.htm | 275368 | 2020-11-12 16:16:29 |
| FilingSummary.xml | 34599 | 2020-11-12 16:16:29 |
| Financial_Report.xlsx | 80839 | 2020-11-12 16:16:29 |
| R1.htm | 55625 | 2020-11-12 16:16:29 |
| R10.htm | 183325 | 2020-11-12 16:16:29 |
| R11.htm | 22846 | 2020-11-12 16:16:29 |
| R12.htm | 68112 | 2020-11-12 16:16:29 |
| R13.htm | 18946 | 2020-11-12 16:16:29 |
| R14.htm | 9576 | 2020-11-12 16:16:29 |
| R15.htm | 30870 | 2020-11-12 16:16:29 |
| R16.htm | 38823 | 2020-11-12 16:16:29 |
| R17.htm | 32375 | 2020-11-12 16:16:29 |
| R18.htm | 236919 | 2020-11-12 16:16:29 |
| R19.htm | 28584 | 2020-11-12 16:16:29 |
| R2.htm | 87229 | 2020-11-12 16:16:29 |
| R20.htm | 5852 | 2020-11-12 16:16:29 |
| R21.htm | 58311 | 2020-11-12 16:16:29 |
| R22.htm | 182985 | 2020-11-12 16:16:29 |
| R23.htm | 22350 | 2020-11-12 16:16:29 |
| R24.htm | 67111 | 2020-11-12 16:16:29 |
| R25.htm | 28316 | 2020-11-12 16:16:29 |
| R26.htm | 41231 | 2020-11-12 16:16:29 |
| R27.htm | 30440 | 2020-11-12 16:16:29 |
| R28.htm | 235540 | 2020-11-12 16:16:29 |
| R29.htm | 28032 | 2020-11-12 16:16:29 |
| R3.htm | 22553 | 2020-11-12 16:16:29 |
| R30.htm | 54370 | 2020-11-12 16:16:29 |
| R31.htm | 36208 | 2020-11-12 16:16:29 |
| R32.htm | 52845 | 2020-11-12 16:16:29 |
| R33.htm | 13213 | 2020-11-12 16:16:29 |
| R34.htm | 9168 | 2020-11-12 16:16:29 |
| R35.htm | 13391 | 2020-11-12 16:16:29 |
| R36.htm | 10602 | 2020-11-12 16:16:29 |
| R37.htm | 10222 | 2020-11-12 16:16:29 |
| R38.htm | 20033 | 2020-11-12 16:16:29 |
| R39.htm | 34361 | 2020-11-12 16:16:29 |
| R4.htm | 34525 | 2020-11-12 16:16:29 |
| R40.htm | 36725 | 2020-11-12 16:16:29 |
| R41.htm | 27799 | 2020-11-12 16:16:29 |
| R42.htm | 19680 | 2020-11-12 16:16:29 |
| R43.htm | 23581 | 2020-11-12 16:16:29 |
| R44.htm | 38237 | 2020-11-12 16:16:29 |
| R45.htm | 15232 | 2020-11-12 16:16:29 |
| R46.htm | 10766 | 2020-11-12 16:16:29 |
| R47.htm | 29330 | 2020-11-12 16:16:29 |
| R48.htm | 12071 | 2020-11-12 16:16:29 |
| R49.htm | 53506 | 2020-11-12 16:16:29 |
| R5.htm | 93028 | 2020-11-12 16:16:29 |
| R50.htm | 57899 | 2020-11-12 16:16:29 |
| R51.htm | 13854 | 2020-11-12 16:16:29 |
| R52.htm | 15425 | 2020-11-12 16:16:29 |
| R53.htm | 12373 | 2020-11-12 16:16:29 |
| R6.htm | 86970 | 2020-11-12 16:16:29 |
| R7.htm | 6924 | 2020-11-12 16:16:29 |
| R8.htm | 11657 | 2020-11-12 16:16:29 |
| R9.htm | 30941 | 2020-11-12 16:16:29 |
| report.css | 2767 | 2020-11-12 16:16:29 |
| Show.js | 1085 | 2020-11-12 16:16:29 |