Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000003499-19-000011-index-headers.html | 2019-04-29 08:20:01 | |
| 0000003499-19-000011-index.html | 2019-04-29 08:20:01 | |
| 0000003499-19-000011.txt | 2019-04-29 08:20:01 | |
 0000003499-19-000011-xbrl.zip | 183816 | 2019-04-29 08:20:01 |
| alx-20190331.xsd | 45261 | 2019-04-29 08:20:01 |
| alx-20190331_cal.xml | 63461 | 2019-04-29 08:20:01 |
| alx-20190331_def.xml | 188116 | 2019-04-29 08:20:01 |
| alx-20190331_lab.xml | 545049 | 2019-04-29 08:20:01 |
| alx-20190331_pre.xml | 325379 | 2019-04-29 08:20:01 |
| alx10-q33120191.htm | 934949 | 2019-04-29 08:20:01 |
| alx10-q33120191_htm.xml | 760738 | 2019-04-29 08:20:01 |
| exhibit152.htm | 3534 | 2019-04-29 08:20:01 |
| exhibit3113.htm | 13516 | 2019-04-29 08:20:01 |
| exhibit3123.htm | 13526 | 2019-04-29 08:20:01 |
| exhibit3213.htm | 6005 | 2019-04-29 08:20:01 |
| exhibit3223.htm | 5992 | 2019-04-29 08:20:01 |
| FilingSummary.xml | 30498 | 2019-04-29 08:20:01 |
| Financial_Report.xlsx | 55302 | 2019-04-29 08:20:01 |
| MetaLinks.json | 461944 | 2019-04-29 08:20:01 |
| R1.htm | 25612 | 2019-04-29 08:20:01 |
| R10.htm | 5349 | 2019-04-29 08:20:01 |
| R11.htm | 5686 | 2019-04-29 08:20:01 |
| R12.htm | 9214 | 2019-04-29 08:20:01 |
| R13.htm | 10745 | 2019-04-29 08:20:01 |
| R14.htm | 22899 | 2019-04-29 08:20:01 |
| R15.htm | 24453 | 2019-04-29 08:20:01 |
| R16.htm | 6933 | 2019-04-29 08:20:01 |
| R17.htm | 7561 | 2019-04-29 08:20:01 |
| R18.htm | 5897 | 2019-04-29 08:20:01 |
| R19.htm | 33306 | 2019-04-29 08:20:01 |
| R2.htm | 77636 | 2019-04-29 08:20:01 |
| R20.htm | 60095 | 2019-04-29 08:20:01 |
| R21.htm | 95591 | 2019-04-29 08:20:01 |
| R22.htm | 15934 | 2019-04-29 08:20:01 |
| R23.htm | 23686 | 2019-04-29 08:20:01 |
| R24.htm | 29708 | 2019-04-29 08:20:01 |
| R25.htm | 20093 | 2019-04-29 08:20:01 |
| R26.htm | 15999 | 2019-04-29 08:20:01 |
| R27.htm | 36207 | 2019-04-29 08:20:01 |
| R28.htm | 58558 | 2019-04-29 08:20:01 |
| R29.htm | 48453 | 2019-04-29 08:20:01 |
| R3.htm | 22910 | 2019-04-29 08:20:01 |
| R30.htm | 23999 | 2019-04-29 08:20:01 |
| R31.htm | 5615 | 2019-04-29 08:20:01 |
| R32.htm | 19802 | 2019-04-29 08:20:01 |
| R33.htm | 9207 | 2019-04-29 08:20:01 |
| R34.htm | 14794 | 2019-04-29 08:20:01 |
| R35.htm | 9637 | 2019-04-29 08:20:01 |
| R36.htm | 52222 | 2019-04-29 08:20:01 |
| R37.htm | 14070 | 2019-04-29 08:20:01 |
| R38.htm | 14601 | 2019-04-29 08:20:01 |
| R39.htm | 7474 | 2019-04-29 08:20:01 |
| R4.htm | 41362 | 2019-04-29 08:20:01 |
| R40.htm | 16746 | 2019-04-29 08:20:01 |
| R41.htm | 29602 | 2019-04-29 08:20:01 |
| R42.htm | 21790 | 2019-04-29 08:20:01 |
| R43.htm | 23511 | 2019-04-29 08:20:01 |
| R44.htm | 14267 | 2019-04-29 08:20:01 |
| R45.htm | 25299 | 2019-04-29 08:20:01 |
| R46.htm | 15891 | 2019-04-29 08:20:01 |
| R47.htm | 14015 | 2019-04-29 08:20:01 |
| R48.htm | 21014 | 2019-04-29 08:20:01 |
| R49.htm | 16473 | 2019-04-29 08:20:01 |
| R5.htm | 6353 | 2019-04-29 08:20:01 |
| R50.htm | 88974 | 2019-04-29 08:20:01 |
| R51.htm | 21474 | 2019-04-29 08:20:01 |
| R6.htm | 12869 | 2019-04-29 08:20:01 |
| R7.htm | 25460 | 2019-04-29 08:20:01 |
| R8.htm | 4492 | 2019-04-29 08:20:01 |
| R9.htm | 74980 | 2019-04-29 08:20:01 |
| report.css | 2767 | 2019-04-29 08:20:01 |
| Show.js | 1085 | 2019-04-29 08:20:01 |