Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000003499-23-000015-index-headers.html | 2023-05-01 08:07:31 | |
| 0000003499-23-000015-index.html | 2023-05-01 08:07:31 | |
| 0000003499-23-000015.txt | 2023-05-01 08:07:31 | |
 0000003499-23-000015-xbrl.zip | 158093 | 2023-05-01 08:07:31 |
| alx-20230331.htm | 757644 | 2023-05-01 08:07:31 |
| alx-20230331.xsd | 33296 | 2023-05-01 08:07:31 |
| alx-20230331_cal.xml | 42872 | 2023-05-01 08:07:31 |
| alx-20230331_def.xml | 141892 | 2023-05-01 08:07:31 |
| alx-20230331_htm.xml | 571471 | 2023-05-01 08:07:31 |
| alx-20230331_lab.xml | 388237 | 2023-05-01 08:07:31 |
| alx-20230331_pre.xml | 255345 | 2023-05-01 08:07:31 |
| exhibit15-10q331231.htm | 2555 | 2023-05-01 08:07:31 |
| exhibit311-10q331231.htm | 8883 | 2023-05-01 08:07:31 |
| exhibit312-10q331231.htm | 8893 | 2023-05-01 08:07:31 |
| exhibit321-10q331231.htm | 5060 | 2023-05-01 08:07:31 |
| exhibit322-10q331231.htm | 5009 | 2023-05-01 08:07:31 |
| FilingSummary.xml | 25772 | 2023-05-01 08:07:31 |
| Financial_Report.xlsx | 55323 | 2023-05-01 08:07:31 |
| MetaLinks.json | 488543 | 2023-05-01 08:07:31 |
| R1.htm | 50157 | 2023-05-01 08:07:31 |
| R10.htm | 5125 | 2023-05-01 08:07:31 |
| R11.htm | 5507 | 2023-05-01 08:07:31 |
| R12.htm | 6222 | 2023-05-01 08:07:31 |
| R13.htm | 15662 | 2023-05-01 08:07:31 |
| R14.htm | 23873 | 2023-05-01 08:07:31 |
| R15.htm | 4938 | 2023-05-01 08:07:31 |
| R16.htm | 19622 | 2023-05-01 08:07:31 |
| R17.htm | 23166 | 2023-05-01 08:07:31 |
| R18.htm | 64353 | 2023-05-01 08:07:31 |
| R19.htm | 9710 | 2023-05-01 08:07:31 |
| R2.htm | 97441 | 2023-05-01 08:07:31 |
| R20.htm | 14380 | 2023-05-01 08:07:31 |
| R21.htm | 12590 | 2023-05-01 08:07:31 |
| R22.htm | 22138 | 2023-05-01 08:07:31 |
| R23.htm | 14329 | 2023-05-01 08:07:31 |
| R24.htm | 26794 | 2023-05-01 08:07:31 |
| R25.htm | 63177 | 2023-05-01 08:07:31 |
| R26.htm | 13052 | 2023-05-01 08:07:31 |
| R27.htm | 4026 | 2023-05-01 08:07:31 |
| R28.htm | 4504 | 2023-05-01 08:07:31 |
| R29.htm | 22912 | 2023-05-01 08:07:31 |
| R3.htm | 22986 | 2023-05-01 08:07:31 |
| R30.htm | 9583 | 2023-05-01 08:07:31 |
| R31.htm | 18682 | 2023-05-01 08:07:31 |
| R32.htm | 13500 | 2023-05-01 08:07:31 |
| R33.htm | 47880 | 2023-05-01 08:07:31 |
| R34.htm | 14000 | 2023-05-01 08:07:31 |
| R35.htm | 43330 | 2023-05-01 08:07:31 |
| R36.htm | 40283 | 2023-05-01 08:07:31 |
| R37.htm | 25289 | 2023-05-01 08:07:31 |
| R38.htm | 14197 | 2023-05-01 08:07:31 |
| R39.htm | 24446 | 2023-05-01 08:07:31 |
| R4.htm | 54632 | 2023-05-01 08:07:31 |
| R40.htm | 4720 | 2023-05-01 08:07:31 |
| R41.htm | 32491 | 2023-05-01 08:07:31 |
| R5.htm | 6296 | 2023-05-01 08:07:31 |
| R6.htm | 22181 | 2023-05-01 08:07:31 |
| R7.htm | 32197 | 2023-05-01 08:07:31 |
| R8.htm | 4463 | 2023-05-01 08:07:31 |
| R9.htm | 78565 | 2023-05-01 08:07:31 |
| report.css | 2767 | 2023-05-01 08:07:31 |
| Show.js | 1085 | 2023-05-01 08:07:31 |