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| 0001104659-24-035915.txt | 2024-03-19 08:30:32 | |
 0001104659-24-035915-xbrl.zip | 16620 | 2024-03-19 08:30:32 |
| arch-20240319.xsd | 3015 | 2024-03-19 08:30:32 |
| arch-20240319_lab.xml | 34240 | 2024-03-19 08:30:32 |
| arch-20240319_pre.xml | 22359 | 2024-03-19 08:30:32 |
| FilingSummary.xml | 1635 | 2024-03-19 08:30:32 |
| Financial_Report.xlsx | 5706 | 2024-03-19 08:30:32 |
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| R1.htm | 39615 | 2024-03-19 08:30:32 |
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| Show.js | 1085 | 2024-03-19 08:30:32 |
| tm249044d1_8k.htm | 30052 | 2024-03-19 08:30:32 |
| tm249044d1_8k_htm.xml | 3621 | 2024-03-19 08:30:32 |
| tm249044d1_ex99-1.htm | 15594 | 2024-03-19 08:30:32 |
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