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| 0000909832-19-000003-index.html | 2019-03-13 16:49:30 | |
| 0000909832-19-000003.txt | 2019-03-13 16:49:30 | |
 0000909832-19-000003-xbrl.zip | 151757 | 2019-03-13 16:49:30 |
| cost-20190217.xml | 1039630 | 2019-03-13 16:49:30 |
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| cost10q21719.htm | 1094156 | 2019-03-13 16:49:30 |
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| costex32110q21719.htm | 12508 | 2019-03-13 16:49:30 |
| FilingSummary.xml | 26337 | 2019-03-13 16:49:30 |
| Financial_Report.xlsx | 53160 | 2019-03-13 16:49:30 |
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| report.css | 2767 | 2019-03-13 16:49:30 |
| Show.js | 1085 | 2019-03-13 16:49:30 |