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| 0001193125-17-323962-index.html | 2017-10-30 08:31:57 | |
| 0001193125-17-323962.txt | 2017-10-30 08:31:57 | |
 0001193125-17-323962-xbrl.zip | 100013 | 2017-10-30 08:31:57 |
| alx-20170930.xml | 486766 | 2017-10-30 08:31:57 |
| alx-20170930.xsd | 43898 | 2017-10-30 08:31:57 |
| alx-20170930_cal.xml | 50509 | 2017-10-30 08:31:57 |
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| d438875dex322.htm | 3902 | 2017-10-30 08:31:57 |
| FilingSummary.xml | 26795 | 2017-10-30 08:31:57 |
| Financial_Report.xlsx | 49003 | 2017-10-30 08:31:57 |
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| report.css | 2767 | 2017-10-30 08:31:57 |
| Show.js | 1410 | 2017-10-30 08:31:57 |