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| 0000003499-25-000009-index.html | 2025-05-05 08:28:04 | |
| 0000003499-25-000009.txt | 2025-05-05 08:28:04 | |
 0000003499-25-000009-xbrl.zip | 149466 | 2025-05-05 08:28:04 |
| alx-20250331.htm | 595048 | 2025-05-05 08:28:04 |
| alx-20250331.xsd | 36223 | 2025-05-05 08:28:04 |
| alx-20250331_cal.xml | 46586 | 2025-05-05 08:28:04 |
| alx-20250331_def.xml | 172058 | 2025-05-05 08:28:04 |
| alx-20250331_htm.xml | 433207 | 2025-05-05 08:28:04 |
| alx-20250331_lab.xml | 457694 | 2025-05-05 08:28:04 |
| alx-20250331_pre.xml | 322319 | 2025-05-05 08:28:04 |
| exhibit151-10q33125.htm | 2560 | 2025-05-05 08:28:04 |
| exhibit311-10q33125.htm | 8796 | 2025-05-05 08:28:04 |
| exhibit312-10q33125.htm | 8770 | 2025-05-05 08:28:04 |
| exhibit321-10q33125.htm | 4978 | 2025-05-05 08:28:04 |
| exhibit322-10q33125.htm | 4961 | 2025-05-05 08:28:04 |
| FilingSummary.xml | 27249 | 2025-05-05 08:28:04 |
| Financial_Report.xlsx | 60906 | 2025-05-05 08:28:04 |
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| R9.htm | 79161 | 2025-05-05 08:28:04 |
| report.css | 2767 | 2025-05-05 08:28:04 |
| Show.js | 1085 | 2025-05-05 08:28:04 |