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| 0000909832-20-000004-index.html | 2020-03-11 17:59:32 | |
| 0000909832-20-000004.txt | 2020-03-11 17:59:32 | |
 0000909832-20-000004-xbrl.zip | 202045 | 2020-03-11 17:59:32 |
| cost-20200216.xsd | 33550 | 2020-03-11 17:59:32 |
| cost-20200216_cal.xml | 73147 | 2020-03-11 17:59:32 |
| cost-20200216_def.xml | 194547 | 2020-03-11 17:59:32 |
| cost-20200216_lab.xml | 601090 | 2020-03-11 17:59:32 |
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| cost10q21620.htm | 1433861 | 2020-03-11 17:59:32 |
| cost10q21620_htm.xml | 1028340 | 2020-03-11 17:59:32 |
| costex3110q21620.htm | 85449 | 2020-03-11 17:59:32 |
| costex31110q21620.htm | 23885 | 2020-03-11 17:59:32 |
| costex32110q21620.htm | 12534 | 2020-03-11 17:59:32 |
| FilingSummary.xml | 25852 | 2020-03-11 17:59:32 |
| Financial_Report.xlsx | 55500 | 2020-03-11 17:59:32 |
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| report.css | 2767 | 2020-03-11 17:59:32 |
| Show.js | 1085 | 2020-03-11 17:59:32 |