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| 0000909832-20-000009-index.html | 2020-06-03 17:55:52 | |
| 0000909832-20-000009.txt | 2020-06-03 17:55:52 | |
 0000909832-20-000009-xbrl.zip | 242423 | 2020-06-03 17:55:52 |
| cost-20200510.htm | 1847553 | 2020-06-03 17:55:52 |
| cost-20200510.xsd | 33467 | 2020-06-03 17:55:52 |
| cost-20200510_cal.xml | 79565 | 2020-06-03 17:55:52 |
| cost-20200510_def.xml | 204421 | 2020-06-03 17:55:52 |
| cost-20200510_htm.xml | 1364778 | 2020-06-03 17:55:52 |
| cost-20200510_lab.xml | 555708 | 2020-06-03 17:55:52 |
| cost-20200510_pre.xml | 347199 | 2020-06-03 17:55:52 |
| FilingSummary.xml | 27450 | 2020-06-03 17:55:52 |
| Financial_Report.xlsx | 61364 | 2020-06-03 17:55:52 |
| MetaLinks.json | 517157 | 2020-06-03 17:55:52 |
| nextgencostex31110q510.htm | 23156 | 2020-06-03 17:55:52 |
| nextgencostex32110q510.htm | 14323 | 2020-06-03 17:55:52 |
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| R9.htm | 6679 | 2020-06-03 17:55:52 |
| report.css | 2767 | 2020-06-03 17:55:52 |
| Show.js | 1085 | 2020-06-03 17:55:52 |