Parent Directory| Name | Size | Last Modified |
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| 0001104659-22-127904-index.html | 2022-12-16 17:00:54 | |
| 0001104659-22-127904.txt | 2022-12-16 17:00:54 | |
 0001104659-22-127904-xbrl.zip | 42114 | 2022-12-16 17:00:54 |
| arch-20221212.xsd | 3033 | 2022-12-16 17:00:54 |
| arch-20221212_lab.xml | 34476 | 2022-12-16 17:00:54 |
| arch-20221212_pre.xml | 22595 | 2022-12-16 17:00:54 |
| FilingSummary.xml | 1648 | 2022-12-16 17:00:54 |
| Financial_Report.xlsx | 5736 | 2022-12-16 17:00:54 |
| MetaLinks.json | 38030 | 2022-12-16 17:00:54 |
| R1.htm | 41134 | 2022-12-16 17:00:54 |
| report.css | 2767 | 2022-12-16 17:00:54 |
| Show.js | 1084 | 2022-12-16 17:00:54 |
| tm2232601d1_8k.htm | 28415 | 2022-12-16 17:00:54 |
| tm2232601d1_8k_htm.xml | 3725 | 2022-12-16 17:00:54 |
| tm2232601d1_ex3-1.htm | 180841 | 2022-12-16 17:00:54 |