Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000909832-19-000013-index-headers.html | 2019-06-05 20:46:10 | |
| 0000909832-19-000013-index.html | 2019-06-05 20:46:10 | |
| 0000909832-19-000013.txt | 2019-06-05 20:46:10 | |
 0000909832-19-000013-xbrl.zip | 159960 | 2019-06-05 20:46:10 |
| cost-20190512.xml | 1041416 | 2019-06-05 20:46:10 |
| cost-20190512.xsd | 31542 | 2019-06-05 20:46:10 |
| cost-20190512_cal.xml | 69304 | 2019-06-05 20:46:10 |
| cost-20190512_def.xml | 166454 | 2019-06-05 20:46:10 |
| cost-20190512_lab.xml | 508826 | 2019-06-05 20:46:10 |
| cost-20190512_pre.xml | 292526 | 2019-06-05 20:46:10 |
| cost10q51219.htm | 1090576 | 2019-06-05 20:46:10 |
| costex31110q51219.htm | 24269 | 2019-06-05 20:46:10 |
| costex32110q51219.htm | 12494 | 2019-06-05 20:46:10 |
| FilingSummary.xml | 25615 | 2019-06-05 20:46:10 |
| Financial_Report.xlsx | 56791 | 2019-06-05 20:46:10 |
| R1.htm | 27629 | 2019-06-05 20:46:10 |
| R10.htm | 32661 | 2019-06-05 20:46:10 |
| R11.htm | 26849 | 2019-06-05 20:46:10 |
| R12.htm | 23170 | 2019-06-05 20:46:10 |
| R13.htm | 38156 | 2019-06-05 20:46:10 |
| R14.htm | 7471 | 2019-06-05 20:46:10 |
| R15.htm | 22496 | 2019-06-05 20:46:10 |
| R16.htm | 16435 | 2019-06-05 20:46:10 |
| R17.htm | 112240 | 2019-06-05 20:46:10 |
| R18.htm | 58342 | 2019-06-05 20:46:10 |
| R19.htm | 29024 | 2019-06-05 20:46:10 |
| R2.htm | 88915 | 2019-06-05 20:46:10 |
| R20.htm | 48469 | 2019-06-05 20:46:10 |
| R21.htm | 28886 | 2019-06-05 20:46:10 |
| R22.htm | 25269 | 2019-06-05 20:46:10 |
| R23.htm | 19511 | 2019-06-05 20:46:10 |
| R24.htm | 34762 | 2019-06-05 20:46:10 |
| R25.htm | 22631 | 2019-06-05 20:46:10 |
| R26.htm | 113870 | 2019-06-05 20:46:10 |
| R27.htm | 72828 | 2019-06-05 20:46:10 |
| R28.htm | 34389 | 2019-06-05 20:46:10 |
| R29.htm | 34652 | 2019-06-05 20:46:10 |
| R3.htm | 16763 | 2019-06-05 20:46:10 |
| R30.htm | 33700 | 2019-06-05 20:46:10 |
| R31.htm | 39320 | 2019-06-05 20:46:10 |
| R32.htm | 5987 | 2019-06-05 20:46:10 |
| R33.htm | 10897 | 2019-06-05 20:46:10 |
| R34.htm | 9320 | 2019-06-05 20:46:10 |
| R35.htm | 24354 | 2019-06-05 20:46:10 |
| R36.htm | 23784 | 2019-06-05 20:46:10 |
| R37.htm | 11547 | 2019-06-05 20:46:10 |
| R38.htm | 10000 | 2019-06-05 20:46:10 |
| R39.htm | 12904 | 2019-06-05 20:46:10 |
| R4.htm | 61023 | 2019-06-05 20:46:10 |
| R40.htm | 33313 | 2019-06-05 20:46:10 |
| R41.htm | 19293 | 2019-06-05 20:46:10 |
| R5.htm | 19393 | 2019-06-05 20:46:10 |
| R6.htm | 58014 | 2019-06-05 20:46:10 |
| R7.htm | 73732 | 2019-06-05 20:46:10 |
| R8.htm | 47530 | 2019-06-05 20:46:10 |
| R9.htm | 49682 | 2019-06-05 20:46:10 |
| report.css | 2767 | 2019-06-05 20:46:10 |
| Show.js | 1085 | 2019-06-05 20:46:10 |