Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001669162-26-000015-index-headers.html | 2026-02-20 16:12:51 | |
| 0001669162-26-000015-index.html | 2026-02-20 16:12:51 | |
| 0001669162-26-000015.txt | 2026-02-20 16:12:51 | |
 0001669162-26-000015-xbrl.zip | 492210 | 2026-02-20 16:12:51 |
| FilingSummary.xml | 56894 | 2026-02-20 16:12:51 |
| knsl-20251231.htm | 3285591 | 2026-02-20 16:12:51 |
| knsl-20251231.xsd | 63850 | 2026-02-20 16:12:51 |
| knsl-20251231_cal.xml | 100738 | 2026-02-20 16:12:51 |
| knsl-20251231_def.xml | 428005 | 2026-02-20 16:12:51 |
 knsl-20251231_g1.jpg | 80794 | 2026-02-20 16:12:51 |
| knsl-20251231_htm.xml | 3202070 | 2026-02-20 16:12:51 |
| knsl-20251231_lab.xml | 1021613 | 2026-02-20 16:12:51 |
| knsl-20251231_pre.xml | 784640 | 2026-02-20 16:12:51 |
| knslex1010senioradvisoragr.htm | 25231 | 2026-02-20 16:12:51 |
| knslexhibit21112312025.htm | 6266 | 2026-02-20 16:12:51 |
| knslexhibit23112312025.htm | 2068 | 2026-02-20 16:12:51 |
| knslexhibit31112312025.htm | 10114 | 2026-02-20 16:12:51 |
| knslexhibit31212312025.htm | 10220 | 2026-02-20 16:12:51 |
| knslexhibit32112312025.htm | 4834 | 2026-02-20 16:12:51 |
| knslexhibit32212312025.htm | 4863 | 2026-02-20 16:12:51 |
| MetaLinks.json | 1355815 | 2026-02-20 16:12:51 |
| R1.htm | 70761 | 2026-02-20 16:12:51 |
| R10.htm | 181941 | 2026-02-20 16:12:51 |
| R11.htm | 84939 | 2026-02-20 16:12:51 |
| R12.htm | 20662 | 2026-02-20 16:12:51 |
| R13.htm | 15550 | 2026-02-20 16:12:51 |
| R14.htm | 95206 | 2026-02-20 16:12:51 |
| R15.htm | 315241 | 2026-02-20 16:12:51 |
| R16.htm | 32443 | 2026-02-20 16:12:51 |
| R17.htm | 40675 | 2026-02-20 16:12:51 |
| R18.htm | 25630 | 2026-02-20 16:12:51 |
| R19.htm | 42514 | 2026-02-20 16:12:51 |
| R2.htm | 130501 | 2026-02-20 16:12:51 |
| R20.htm | 12014 | 2026-02-20 16:12:51 |
| R21.htm | 8116 | 2026-02-20 16:12:51 |
| R22.htm | 27314 | 2026-02-20 16:12:51 |
| R23.htm | 117016 | 2026-02-20 16:12:51 |
| R24.htm | 13968 | 2026-02-20 16:12:51 |
| R25.htm | 5231 | 2026-02-20 16:12:51 |
| R26.htm | 35330 | 2026-02-20 16:12:51 |
| R27.htm | 148337 | 2026-02-20 16:12:51 |
| R28.htm | 37029 | 2026-02-20 16:12:51 |
| R29.htm | 11592 | 2026-02-20 16:12:51 |
| R3.htm | 26369 | 2026-02-20 16:12:51 |
| R30.htm | 4371 | 2026-02-20 16:12:51 |
| R31.htm | 26277 | 2026-02-20 16:12:51 |
| R32.htm | 96669 | 2026-02-20 16:12:51 |
| R33.htm | 31178 | 2026-02-20 16:12:51 |
| R34.htm | 182620 | 2026-02-20 16:12:51 |
| R35.htm | 74397 | 2026-02-20 16:12:51 |
| R36.htm | 21189 | 2026-02-20 16:12:51 |
| R37.htm | 15085 | 2026-02-20 16:12:51 |
| R38.htm | 92958 | 2026-02-20 16:12:51 |
| R39.htm | 325382 | 2026-02-20 16:12:51 |
| R4.htm | 117489 | 2026-02-20 16:12:51 |
| R40.htm | 29849 | 2026-02-20 16:12:51 |
| R41.htm | 29047 | 2026-02-20 16:12:51 |
| R42.htm | 24405 | 2026-02-20 16:12:51 |
| R43.htm | 17993 | 2026-02-20 16:12:51 |
| R44.htm | 25936 | 2026-02-20 16:12:51 |
| R45.htm | 45611 | 2026-02-20 16:12:51 |
| R46.htm | 54868 | 2026-02-20 16:12:51 |
| R47.htm | 13353 | 2026-02-20 16:12:51 |
| R48.htm | 112600 | 2026-02-20 16:12:51 |
| R49.htm | 4069 | 2026-02-20 16:12:51 |
| R5.htm | 69446 | 2026-02-20 16:12:51 |
| R50.htm | 10532 | 2026-02-20 16:12:51 |
| R51.htm | 10055 | 2026-02-20 16:12:51 |
| R52.htm | 41741 | 2026-02-20 16:12:51 |
| R53.htm | 40812 | 2026-02-20 16:12:51 |
| R54.htm | 78965 | 2026-02-20 16:12:51 |
| R55.htm | 43617 | 2026-02-20 16:12:51 |
| R56.htm | 22829 | 2026-02-20 16:12:51 |
| R57.htm | 24696 | 2026-02-20 16:12:51 |
| R58.htm | 8579 | 2026-02-20 16:12:51 |
| R59.htm | 5986 | 2026-02-20 16:12:51 |
| R6.htm | 4564 | 2026-02-20 16:12:51 |
| R60.htm | 19841 | 2026-02-20 16:12:51 |
| R61.htm | 89041 | 2026-02-20 16:12:51 |
| R62.htm | 27657 | 2026-02-20 16:12:51 |
| R63.htm | 20392 | 2026-02-20 16:12:51 |
| R64.htm | 13033 | 2026-02-20 16:12:51 |
| R65.htm | 77622 | 2026-02-20 16:12:51 |
| R66.htm | 41496 | 2026-02-20 16:12:51 |
| R67.htm | 35941 | 2026-02-20 16:12:51 |
| R68.htm | 18310 | 2026-02-20 16:12:51 |
| R69.htm | 157388 | 2026-02-20 16:12:51 |
| R7.htm | 111425 | 2026-02-20 16:12:51 |
| R70.htm | 35149 | 2026-02-20 16:12:51 |
| R71.htm | 25231 | 2026-02-20 16:12:51 |
| R72.htm | 27743 | 2026-02-20 16:12:51 |
| R73.htm | 53198 | 2026-02-20 16:12:51 |
| R74.htm | 16561 | 2026-02-20 16:12:51 |
| R75.htm | 76797 | 2026-02-20 16:12:51 |
| R76.htm | 53180 | 2026-02-20 16:12:51 |
| R77.htm | 22013 | 2026-02-20 16:12:51 |
| R78.htm | 6279 | 2026-02-20 16:12:51 |
| R79.htm | 47710 | 2026-02-20 16:12:51 |
| R8.htm | 6021 | 2026-02-20 16:12:51 |
| R80.htm | 98052 | 2026-02-20 16:12:51 |
| R81.htm | 4469 | 2026-02-20 16:12:51 |
| R82.htm | 33210 | 2026-02-20 16:12:51 |
| R83.htm | 95224 | 2026-02-20 16:12:51 |
| R84.htm | 84551 | 2026-02-20 16:12:51 |
| R85.htm | 11658 | 2026-02-20 16:12:51 |
| R86.htm | 10774 | 2026-02-20 16:12:51 |
| R87.htm | 43089 | 2026-02-20 16:12:51 |
| R88.htm | 93204 | 2026-02-20 16:12:51 |
| R89.htm | 78246 | 2026-02-20 16:12:51 |
| R9.htm | 53167 | 2026-02-20 16:12:51 |
| R90.htm | 82362 | 2026-02-20 16:12:51 |
| R91.htm | 19290 | 2026-02-20 16:12:51 |
| R92.htm | 24951 | 2026-02-20 16:12:51 |
| report.css | 2768 | 2026-02-20 16:12:51 |
| Show.js | 1086 | 2026-02-20 16:12:51 |