Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000003499-22-000009-index-headers.html | 2022-05-02 08:12:50 | |
| 0000003499-22-000009-index.html | 2022-05-02 08:12:50 | |
| 0000003499-22-000009.txt | 2022-05-02 08:12:50 | |
 0000003499-22-000009-xbrl.zip | 146343 | 2022-05-02 08:12:50 |
| alx-20220331.htm | 680131 | 2022-05-02 08:12:50 |
| alx-20220331.xsd | 30807 | 2022-05-02 08:12:50 |
| alx-20220331_cal.xml | 41224 | 2022-05-02 08:12:50 |
| alx-20220331_def.xml | 128289 | 2022-05-02 08:12:50 |
| alx-20220331_htm.xml | 470983 | 2022-05-02 08:12:50 |
| alx-20220331_lab.xml | 350425 | 2022-05-02 08:12:50 |
| alx-20220331_pre.xml | 239716 | 2022-05-02 08:12:50 |
| exhibit15-10q33122.htm | 2860 | 2022-05-02 08:12:50 |
| exhibit311-10q33122.htm | 8882 | 2022-05-02 08:12:50 |
| exhibit312-10q33122.htm | 8892 | 2022-05-02 08:12:50 |
| exhibit321-10q33122.htm | 5059 | 2022-05-02 08:12:50 |
| exhibit322-10q33122.htm | 5008 | 2022-05-02 08:12:50 |
| FilingSummary.xml | 23575 | 2022-05-02 08:12:50 |
| Financial_Report.xlsx | 48732 | 2022-05-02 08:12:50 |
| MetaLinks.json | 404311 | 2022-05-02 08:12:50 |
| R1.htm | 52311 | 2022-05-02 08:12:50 |
| R10.htm | 5367 | 2022-05-02 08:12:50 |
| R11.htm | 5563 | 2022-05-02 08:12:50 |
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| R19.htm | 14773 | 2022-05-02 08:12:50 |
| R2.htm | 95114 | 2022-05-02 08:12:50 |
| R20.htm | 12666 | 2022-05-02 08:12:50 |
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| R27.htm | 4563 | 2022-05-02 08:12:50 |
| R28.htm | 23014 | 2022-05-02 08:12:50 |
| R29.htm | 9666 | 2022-05-02 08:12:50 |
| R3.htm | 23679 | 2022-05-02 08:12:50 |
| R30.htm | 18753 | 2022-05-02 08:12:50 |
| R31.htm | 48818 | 2022-05-02 08:12:50 |
| R32.htm | 14109 | 2022-05-02 08:12:50 |
| R33.htm | 31645 | 2022-05-02 08:12:50 |
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| R4.htm | 56862 | 2022-05-02 08:12:50 |
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| R6.htm | 22240 | 2022-05-02 08:12:50 |
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| R8.htm | 4510 | 2022-05-02 08:12:50 |
| R9.htm | 78038 | 2022-05-02 08:12:50 |
| report.css | 2767 | 2022-05-02 08:12:50 |
| Show.js | 1085 | 2022-05-02 08:12:50 |