Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000003499-22-000027-index-headers.html | 2022-10-31 08:18:48 | |
| 0000003499-22-000027-index.html | 2022-10-31 08:18:48 | |
| 0000003499-22-000027.txt | 2022-10-31 08:18:48 | |
 0000003499-22-000027-xbrl.zip | 176738 | 2022-10-31 08:18:48 |
| alx-20220930.htm | 931729 | 2022-10-31 08:18:48 |
| alx-20220930.xsd | 36272 | 2022-10-31 08:18:48 |
| alx-20220930_cal.xml | 46522 | 2022-10-31 08:18:48 |
| alx-20220930_def.xml | 164346 | 2022-10-31 08:18:48 |
| alx-20220930_htm.xml | 649144 | 2022-10-31 08:18:48 |
| alx-20220930_lab.xml | 413889 | 2022-10-31 08:18:48 |
| alx-20220930_pre.xml | 279947 | 2022-10-31 08:18:48 |
| exhibit15-10q93022.htm | 2562 | 2022-10-31 08:18:48 |
| exhibit311-10q93022.htm | 8887 | 2022-10-31 08:18:48 |
| exhibit312-10q93022.htm | 8897 | 2022-10-31 08:18:48 |
| exhibit321-10q93022.htm | 5068 | 2022-10-31 08:18:48 |
| exhibit322-10q93022.htm | 5017 | 2022-10-31 08:18:48 |
| FilingSummary.xml | 26008 | 2022-10-31 08:18:48 |
| Financial_Report.xlsx | 60439 | 2022-10-31 08:18:48 |
| MetaLinks.json | 461516 | 2022-10-31 08:18:48 |
| R1.htm | 50159 | 2022-10-31 08:18:48 |
| R10.htm | 5333 | 2022-10-31 08:18:48 |
| R11.htm | 5531 | 2022-10-31 08:18:48 |
| R12.htm | 7018 | 2022-10-31 08:18:48 |
| R13.htm | 16289 | 2022-10-31 08:18:48 |
| R14.htm | 32899 | 2022-10-31 08:18:48 |
| R15.htm | 27583 | 2022-10-31 08:18:48 |
| R16.htm | 22369 | 2022-10-31 08:18:48 |
| R17.htm | 7674 | 2022-10-31 08:18:48 |
| R18.htm | 39848 | 2022-10-31 08:18:48 |
| R19.htm | 10371 | 2022-10-31 08:18:48 |
| R2.htm | 95610 | 2022-10-31 08:18:48 |
| R20.htm | 18719 | 2022-10-31 08:18:48 |
| R21.htm | 5957 | 2022-10-31 08:18:48 |
| R22.htm | 16815 | 2022-10-31 08:18:48 |
| R23.htm | 30685 | 2022-10-31 08:18:48 |
| R24.htm | 21792 | 2022-10-31 08:18:48 |
| R25.htm | 25999 | 2022-10-31 08:18:48 |
| R26.htm | 38099 | 2022-10-31 08:18:48 |
| R27.htm | 18276 | 2022-10-31 08:18:48 |
| R28.htm | 4106 | 2022-10-31 08:18:48 |
| R29.htm | 4530 | 2022-10-31 08:18:48 |
| R3.htm | 23422 | 2022-10-31 08:18:48 |
| R30.htm | 23833 | 2022-10-31 08:18:48 |
| R31.htm | 10077 | 2022-10-31 08:18:48 |
| R32.htm | 19342 | 2022-10-31 08:18:48 |
| R33.htm | 17578 | 2022-10-31 08:18:48 |
| R34.htm | 48279 | 2022-10-31 08:18:48 |
| R35.htm | 29277 | 2022-10-31 08:18:48 |
| R36.htm | 20016 | 2022-10-31 08:18:48 |
| R37.htm | 18279 | 2022-10-31 08:18:48 |
| R38.htm | 42129 | 2022-10-31 08:18:48 |
| R39.htm | 14220 | 2022-10-31 08:18:48 |
| R4.htm | 62237 | 2022-10-31 08:18:48 |
| R40.htm | 32926 | 2022-10-31 08:18:48 |
| R41.htm | 5086 | 2022-10-31 08:18:48 |
| R42.htm | 33163 | 2022-10-31 08:18:48 |
| R43.htm | 22583 | 2022-10-31 08:18:48 |
| R5.htm | 6719 | 2022-10-31 08:18:48 |
| R6.htm | 22759 | 2022-10-31 08:18:48 |
| R7.htm | 43072 | 2022-10-31 08:18:48 |
| R8.htm | 4788 | 2022-10-31 08:18:48 |
| R9.htm | 89196 | 2022-10-31 08:18:48 |
| report.css | 2767 | 2022-10-31 08:18:48 |
| Show.js | 1085 | 2022-10-31 08:18:48 |