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| 0001193125-23-073837.txt | 2023-03-17 16:02:23 | |
 0001193125-23-073837-xbrl.zip | 247111 | 2023-03-17 16:02:23 |
| alpa-20221231.xsd | 47035 | 2023-03-17 16:02:23 |
| alpa-20221231_cal.xml | 26666 | 2023-03-17 16:02:23 |
| alpa-20221231_def.xml | 279848 | 2023-03-17 16:02:23 |
| alpa-20221231_lab.xml | 317219 | 2023-03-17 16:02:23 |
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| d455133d10k.htm | 1361832 | 2023-03-17 16:02:23 |
| d455133d10k_htm.xml | 537445 | 2023-03-17 16:02:23 |
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| d455133dex321.htm | 4506 | 2023-03-17 16:02:23 |
| d455133dex322.htm | 4469 | 2023-03-17 16:02:23 |
| FilingSummary.xml | 20503 | 2023-03-17 16:02:23 |
| Financial_Report.xlsx | 76968 | 2023-03-17 16:02:23 |
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