Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000930420-22-000027-index-headers.html | 2022-02-25 16:13:19 | |
| 0000930420-22-000027-index.html | 2022-02-25 16:13:19 | |
| 0000930420-22-000027.txt | 2022-02-25 16:13:19 | |
 0000930420-22-000027-xbrl.zip | 361866 | 2022-02-25 16:13:19 |
| exhibit21_2021kforcesubsid.htm | 5900 | 2022-02-25 16:13:19 |
| exhibit23_2021consentofind.htm | 2917 | 2022-02-25 16:13:19 |
| exhibit311q42021.htm | 8178 | 2022-02-25 16:13:19 |
| exhibit312q42021.htm | 8173 | 2022-02-25 16:13:19 |
| exhibit321q42021.htm | 4655 | 2022-02-25 16:13:19 |
| exhibit322q42021.htm | 4667 | 2022-02-25 16:13:19 |
| FilingSummary.xml | 46888 | 2022-02-25 16:13:19 |
| Financial_Report.xlsx | 113141 | 2022-02-25 16:13:19 |
| kfrc-20211231.htm | 2003786 | 2022-02-25 16:13:19 |
| kfrc-20211231.xsd | 51972 | 2022-02-25 16:13:19 |
| kfrc-20211231_cal.xml | 99880 | 2022-02-25 16:13:19 |
| kfrc-20211231_def.xml | 260278 | 2022-02-25 16:13:19 |
 kfrc-20211231_g1.jpg | 31171 | 2022-02-25 16:13:19 |
| kfrc-20211231_htm.xml | 1302752 | 2022-02-25 16:13:19 |
| kfrc-20211231_lab.xml | 703322 | 2022-02-25 16:13:19 |
| kfrc-20211231_pre.xml | 478103 | 2022-02-25 16:13:19 |
| MetaLinks.json | 775859 | 2022-02-25 16:13:19 |
| R1.htm | 64808 | 2022-02-25 16:13:19 |
| R10.htm | 20213 | 2022-02-25 16:13:19 |
| R11.htm | 31853 | 2022-02-25 16:13:19 |
| R12.htm | 29931 | 2022-02-25 16:13:19 |
| R13.htm | 12433 | 2022-02-25 16:13:19 |
| R14.htm | 20871 | 2022-02-25 16:13:19 |
| R15.htm | 70195 | 2022-02-25 16:13:19 |
| R16.htm | 15431 | 2022-02-25 16:13:19 |
| R17.htm | 13549 | 2022-02-25 16:13:19 |
| R18.htm | 17172 | 2022-02-25 16:13:19 |
| R19.htm | 14012 | 2022-02-25 16:13:19 |
| R2.htm | 7682 | 2022-02-25 16:13:19 |
| R20.htm | 23702 | 2022-02-25 16:13:19 |
| R21.htm | 11577 | 2022-02-25 16:13:19 |
| R22.htm | 13009 | 2022-02-25 16:13:19 |
| R23.htm | 13609 | 2022-02-25 16:13:19 |
| R24.htm | 19028 | 2022-02-25 16:13:19 |
| R25.htm | 21065 | 2022-02-25 16:13:19 |
| R26.htm | 23503 | 2022-02-25 16:13:19 |
| R27.htm | 25975 | 2022-02-25 16:13:19 |
| R28.htm | 90348 | 2022-02-25 16:13:19 |
| R29.htm | 20389 | 2022-02-25 16:13:19 |
| R3.htm | 113211 | 2022-02-25 16:13:19 |
| R30.htm | 28507 | 2022-02-25 16:13:19 |
| R31.htm | 27125 | 2022-02-25 16:13:19 |
| R32.htm | 10862 | 2022-02-25 16:13:19 |
| R33.htm | 19798 | 2022-02-25 16:13:19 |
| R34.htm | 73321 | 2022-02-25 16:13:19 |
| R35.htm | 15670 | 2022-02-25 16:13:19 |
| R36.htm | 12865 | 2022-02-25 16:13:19 |
| R37.htm | 16763 | 2022-02-25 16:13:19 |
| R38.htm | 13746 | 2022-02-25 16:13:19 |
| R39.htm | 24292 | 2022-02-25 16:13:19 |
| R4.htm | 106981 | 2022-02-25 16:13:19 |
| R40.htm | 11085 | 2022-02-25 16:13:19 |
| R41.htm | 16948 | 2022-02-25 16:13:19 |
| R42.htm | 15891 | 2022-02-25 16:13:19 |
| R43.htm | 10928 | 2022-02-25 16:13:19 |
| R44.htm | 4276 | 2022-02-25 16:13:19 |
| R45.htm | 18881 | 2022-02-25 16:13:19 |
| R46.htm | 19610 | 2022-02-25 16:13:19 |
| R47.htm | 12016 | 2022-02-25 16:13:19 |
| R48.htm | 5891 | 2022-02-25 16:13:19 |
| R49.htm | 7945 | 2022-02-25 16:13:19 |
| R5.htm | 24514 | 2022-02-25 16:13:19 |
| R50.htm | 23882 | 2022-02-25 16:13:19 |
| R51.htm | 38468 | 2022-02-25 16:13:19 |
| R52.htm | 10071 | 2022-02-25 16:13:19 |
| R53.htm | 27414 | 2022-02-25 16:13:19 |
| R54.htm | 21440 | 2022-02-25 16:13:19 |
| R55.htm | 24188 | 2022-02-25 16:13:19 |
| R56.htm | 46483 | 2022-02-25 16:13:19 |
| R57.htm | 4898 | 2022-02-25 16:13:19 |
| R58.htm | 15423 | 2022-02-25 16:13:19 |
| R59.htm | 20223 | 2022-02-25 16:13:19 |
| R6.htm | 73598 | 2022-02-25 16:13:19 |
| R60.htm | 41167 | 2022-02-25 16:13:19 |
| R61.htm | 11972 | 2022-02-25 16:13:19 |
| R62.htm | 20869 | 2022-02-25 16:13:19 |
| R63.htm | 16130 | 2022-02-25 16:13:19 |
| R64.htm | 5532 | 2022-02-25 16:13:19 |
| R65.htm | 27500 | 2022-02-25 16:13:19 |
| R66.htm | 23075 | 2022-02-25 16:13:19 |
| R67.htm | 19385 | 2022-02-25 16:13:19 |
| R68.htm | 20563 | 2022-02-25 16:13:19 |
| R69.htm | 9915 | 2022-02-25 16:13:19 |
| R7.htm | 10705 | 2022-02-25 16:13:19 |
| R70.htm | 39780 | 2022-02-25 16:13:19 |
| R71.htm | 50247 | 2022-02-25 16:13:19 |
| R72.htm | 15050 | 2022-02-25 16:13:19 |
| R73.htm | 13839 | 2022-02-25 16:13:19 |
| R74.htm | 14417 | 2022-02-25 16:13:19 |
| R75.htm | 33562 | 2022-02-25 16:13:19 |
| R76.htm | 29500 | 2022-02-25 16:13:19 |
| R77.htm | 37819 | 2022-02-25 16:13:19 |
| R78.htm | 16997 | 2022-02-25 16:13:19 |
| R8.htm | 100681 | 2022-02-25 16:13:19 |
| R9.htm | 47858 | 2022-02-25 16:13:19 |
| report.css | 2767 | 2022-02-25 16:13:19 |
| Show.js | 1085 | 2022-02-25 16:13:19 |