Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000003499-23-000030-index-headers.html | 2023-10-30 08:26:18 | |
| 0000003499-23-000030-index.html | 2023-10-30 08:26:18 | |
| 0000003499-23-000030.txt | 2023-10-30 08:26:18 | |
 0000003499-23-000030-xbrl.zip | 151637 | 2023-10-30 08:26:18 |
| alx-20230930.htm | 752663 | 2023-10-30 08:26:18 |
| alx-20230930.xsd | 39113 | 2023-10-30 08:26:18 |
| alx-20230930_cal.xml | 45525 | 2023-10-30 08:26:18 |
| alx-20230930_def.xml | 178454 | 2023-10-30 08:26:18 |
| alx-20230930_htm.xml | 489520 | 2023-10-30 08:26:18 |
| alx-20230930_lab.xml | 441164 | 2023-10-30 08:26:18 |
| alx-20230930_pre.xml | 296327 | 2023-10-30 08:26:18 |
| exhibit15-10q93023.htm | 2789 | 2023-10-30 08:26:18 |
| exhibit311-10q93023.htm | 8785 | 2023-10-30 08:26:18 |
| exhibit312-10q93023.htm | 8795 | 2023-10-30 08:26:18 |
| exhibit321-10q93023.htm | 4983 | 2023-10-30 08:26:18 |
| exhibit322-10q93023.htm | 4915 | 2023-10-30 08:26:18 |
| FilingSummary.xml | 25962 | 2023-10-30 08:26:18 |
| Financial_Report.xlsx | 63258 | 2023-10-30 08:26:18 |
| MetaLinks.json | 586672 | 2023-10-30 08:26:18 |
| R1.htm | 50157 | 2023-10-30 08:26:18 |
| R10.htm | 5155 | 2023-10-30 08:26:18 |
| R11.htm | 5489 | 2023-10-30 08:26:18 |
| R12.htm | 6217 | 2023-10-30 08:26:18 |
| R13.htm | 16404 | 2023-10-30 08:26:18 |
| R14.htm | 33817 | 2023-10-30 08:26:18 |
| R15.htm | 5313 | 2023-10-30 08:26:18 |
| R16.htm | 29745 | 2023-10-30 08:26:18 |
| R17.htm | 23661 | 2023-10-30 08:26:18 |
| R18.htm | 7832 | 2023-10-30 08:26:18 |
| R19.htm | 57202 | 2023-10-30 08:26:18 |
| R2.htm | 96345 | 2023-10-30 08:26:18 |
| R20.htm | 9658 | 2023-10-30 08:26:18 |
| R21.htm | 18867 | 2023-10-30 08:26:18 |
| R22.htm | 16795 | 2023-10-30 08:26:18 |
| R23.htm | 31111 | 2023-10-30 08:26:18 |
| R24.htm | 22106 | 2023-10-30 08:26:18 |
| R25.htm | 26319 | 2023-10-30 08:26:18 |
| R26.htm | 55578 | 2023-10-30 08:26:18 |
| R27.htm | 17717 | 2023-10-30 08:26:18 |
| R28.htm | 4026 | 2023-10-30 08:26:18 |
| R29.htm | 4488 | 2023-10-30 08:26:18 |
| R3.htm | 25754 | 2023-10-30 08:26:18 |
| R30.htm | 25340 | 2023-10-30 08:26:18 |
| R31.htm | 9939 | 2023-10-30 08:26:18 |
| R32.htm | 29178 | 2023-10-30 08:26:18 |
| R33.htm | 14138 | 2023-10-30 08:26:18 |
| R34.htm | 72664 | 2023-10-30 08:26:18 |
| R35.htm | 17581 | 2023-10-30 08:26:18 |
| R36.htm | 22419 | 2023-10-30 08:26:18 |
| R37.htm | 39779 | 2023-10-30 08:26:18 |
| R38.htm | 26091 | 2023-10-30 08:26:18 |
| R39.htm | 24680 | 2023-10-30 08:26:18 |
| R4.htm | 59675 | 2023-10-30 08:26:18 |
| R40.htm | 36452 | 2023-10-30 08:26:18 |
| R41.htm | 14178 | 2023-10-30 08:26:18 |
| R42.htm | 26022 | 2023-10-30 08:26:18 |
| R43.htm | 5027 | 2023-10-30 08:26:18 |
| R44.htm | 32978 | 2023-10-30 08:26:18 |
| R5.htm | 6564 | 2023-10-30 08:26:18 |
| R6.htm | 23087 | 2023-10-30 08:26:18 |
| R7.htm | 44654 | 2023-10-30 08:26:18 |
| R8.htm | 4756 | 2023-10-30 08:26:18 |
| R9.htm | 92587 | 2023-10-30 08:26:18 |
| report.css | 2767 | 2023-10-30 08:26:18 |
| Show.js | 1085 | 2023-10-30 08:26:18 |