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| 0000766421-19-000008-index.html | 2019-02-15 16:12:29 | |
| 0000766421-19-000008.txt | 2019-02-15 16:12:29 | |
 0000766421-19-000008-xbrl.zip | 385649 | 2019-02-15 16:12:29 |
| alk-20181231.xml | 3908635 | 2019-02-15 16:12:29 |
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| alk-20181231_cal.xml | 137064 | 2019-02-15 16:12:29 |
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| alk10-k123118.htm | 3531407 | 2019-02-15 16:12:29 |
| alk10-k123118ex21.htm | 6915 | 2019-02-15 16:12:29 |
| alk10-k123118ex231.htm | 4792 | 2019-02-15 16:12:29 |
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| FilingSummary.xml | 51973 | 2019-02-15 16:12:29 |
| Financial_Report.xlsx | 127709 | 2019-02-15 16:12:29 |
| oprplanamended122818.htm | 8522 | 2019-02-15 16:12:29 |
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| report.css | 2768 | 2019-02-15 16:12:29 |
| Show.js | 1086 | 2019-02-15 16:12:29 |