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| 0001490906-24-000028.txt | 2024-08-07 12:12:51 | |
 0001490906-24-000028-xbrl.zip | 332658 | 2024-08-07 12:12:51 |
| cffn-063024xex311.htm | 10317 | 2024-08-07 12:12:51 |
| cffn-063024xex312.htm | 10157 | 2024-08-07 12:12:51 |
| cffn-063024xex32.htm | 9073 | 2024-08-07 12:12:51 |
| cffn-20240630.htm | 4401444 | 2024-08-07 12:12:51 |
| cffn-20240630.xsd | 34418 | 2024-08-07 12:12:51 |
| cffn-20240630_cal.xml | 103807 | 2024-08-07 12:12:51 |
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| cffn-20240630_lab.xml | 514011 | 2024-08-07 12:12:51 |
| cffn-20240630_pre.xml | 483322 | 2024-08-07 12:12:51 |
| FilingSummary.xml | 33918 | 2024-08-07 12:12:51 |
| Financial_Report.xlsx | 123021 | 2024-08-07 12:12:51 |
| MetaLinks.json | 740646 | 2024-08-07 12:12:51 |
| R1.htm | 51685 | 2024-08-07 12:12:51 |
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| report.css | 2767 | 2024-08-07 12:12:51 |
| Show.js | 1085 | 2024-08-07 12:12:51 |