Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001140361-21-036597-index-headers.html | 2021-11-04 18:02:26 | |
| 0001140361-21-036597-index.html | 2021-11-04 18:02:26 | |
| 0001140361-21-036597.txt | 2021-11-04 18:02:26 | |
 0001140361-21-036597-xbrl.zip | 182427 | 2021-11-04 18:02:26 |
| brhc10030265_10q.htm | 1027440 | 2021-11-04 18:02:26 |
| brhc10030265_10q_htm.xml | 852385 | 2021-11-04 18:02:26 |
| brhc10030265_ex31-1.htm | 15110 | 2021-11-04 18:02:26 |
| brhc10030265_ex31-2.htm | 15767 | 2021-11-04 18:02:26 |
| brhc10030265_ex32-1.htm | 7363 | 2021-11-04 18:02:26 |
| brhc10030265_ex32-2.htm | 7411 | 2021-11-04 18:02:26 |
| cthr-20210930.xsd | 42185 | 2021-11-04 18:02:26 |
| cthr-20210930_cal.xml | 56678 | 2021-11-04 18:02:26 |
| cthr-20210930_def.xml | 202967 | 2021-11-04 18:02:26 |
| cthr-20210930_lab.xml | 581709 | 2021-11-04 18:02:26 |
| cthr-20210930_pre.xml | 368780 | 2021-11-04 18:02:26 |
| FilingSummary.xml | 31809 | 2021-11-04 18:02:26 |
| Financial_Report.xlsx | 72101 | 2021-11-04 18:02:26 |
| MetaLinks.json | 549346 | 2021-11-04 18:02:26 |
| R1.htm | 52196 | 2021-11-04 18:02:26 |
| R10.htm | 7985 | 2021-11-04 18:02:26 |
| R11.htm | 37855 | 2021-11-04 18:02:26 |
| R12.htm | 7447 | 2021-11-04 18:02:26 |
| R13.htm | 17022 | 2021-11-04 18:02:26 |
| R14.htm | 13663 | 2021-11-04 18:02:26 |
| R15.htm | 50054 | 2021-11-04 18:02:26 |
| R16.htm | 19082 | 2021-11-04 18:02:26 |
| R17.htm | 53197 | 2021-11-04 18:02:26 |
| R18.htm | 25250 | 2021-11-04 18:02:26 |
| R19.htm | 22585 | 2021-11-04 18:02:26 |
| R2.htm | 121259 | 2021-11-04 18:02:26 |
| R20.htm | 32879 | 2021-11-04 18:02:26 |
| R21.htm | 12066 | 2021-11-04 18:02:26 |
| R22.htm | 114182 | 2021-11-04 18:02:26 |
| R23.htm | 33252 | 2021-11-04 18:02:26 |
| R24.htm | 16670 | 2021-11-04 18:02:26 |
| R25.htm | 33108 | 2021-11-04 18:02:26 |
| R26.htm | 50531 | 2021-11-04 18:02:26 |
| R27.htm | 22583 | 2021-11-04 18:02:26 |
| R28.htm | 20429 | 2021-11-04 18:02:26 |
| R29.htm | 24978 | 2021-11-04 18:02:26 |
| R3.htm | 10692 | 2021-11-04 18:02:26 |
| R30.htm | 9311 | 2021-11-04 18:02:26 |
| R31.htm | 54241 | 2021-11-04 18:02:26 |
| R32.htm | 16107 | 2021-11-04 18:02:26 |
| R33.htm | 12724 | 2021-11-04 18:02:26 |
| R34.htm | 4680 | 2021-11-04 18:02:26 |
| R35.htm | 28560 | 2021-11-04 18:02:26 |
| R36.htm | 14293 | 2021-11-04 18:02:26 |
| R37.htm | 20101 | 2021-11-04 18:02:26 |
| R38.htm | 23750 | 2021-11-04 18:02:26 |
| R39.htm | 56910 | 2021-11-04 18:02:26 |
| R4.htm | 73296 | 2021-11-04 18:02:26 |
| R40.htm | 19207 | 2021-11-04 18:02:26 |
| R41.htm | 15903 | 2021-11-04 18:02:26 |
| R42.htm | 25714 | 2021-11-04 18:02:26 |
| R43.htm | 17628 | 2021-11-04 18:02:26 |
| R44.htm | 10395 | 2021-11-04 18:02:26 |
| R45.htm | 31764 | 2021-11-04 18:02:26 |
| R46.htm | 48182 | 2021-11-04 18:02:26 |
| R47.htm | 26605 | 2021-11-04 18:02:26 |
| R48.htm | 4524 | 2021-11-04 18:02:26 |
| R49.htm | 45111 | 2021-11-04 18:02:26 |
| R5.htm | 46415 | 2021-11-04 18:02:26 |
| R50.htm | 29673 | 2021-11-04 18:02:26 |
| R6.htm | 74175 | 2021-11-04 18:02:26 |
| R7.htm | 8141 | 2021-11-04 18:02:26 |
| R8.htm | 21372 | 2021-11-04 18:02:26 |
| R9.htm | 108459 | 2021-11-04 18:02:26 |
| report.css | 2767 | 2021-11-04 18:02:26 |
| Show.js | 1085 | 2021-11-04 18:02:26 |