Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-21-073492-index-headers.html | 2021-05-27 20:35:27 | |
| 0001104659-21-073492-index.html | 2021-05-27 20:35:27 | |
| 0001104659-21-073492.txt | 2021-05-27 20:35:27 | |
 0001104659-21-073492-xbrl.zip | 171153 | 2021-05-27 20:35:27 |
| FilingSummary.xml | 42643 | 2021-05-27 20:35:27 |
| Financial_Report.xlsx | 107970 | 2021-05-27 20:35:27 |
| krt-20210331.xml | 1750041 | 2021-05-27 20:35:27 |
| krt-20210331.xsd | 57987 | 2021-05-27 20:35:27 |
| krt-20210331_cal.xml | 78160 | 2021-05-27 20:35:27 |
| krt-20210331_def.xml | 192159 | 2021-05-27 20:35:27 |
| krt-20210331_lab.xml | 552174 | 2021-05-27 20:35:27 |
| krt-20210331_pre.xml | 427873 | 2021-05-27 20:35:27 |
| R1.htm | 54030 | 2021-05-27 20:35:27 |
| R10.htm | 41020 | 2021-05-27 20:35:27 |
| R11.htm | 28771 | 2021-05-27 20:35:27 |
| R12.htm | 44621 | 2021-05-27 20:35:27 |
| R13.htm | 6140 | 2021-05-27 20:35:27 |
| R14.htm | 36763 | 2021-05-27 20:35:27 |
| R15.htm | 127495 | 2021-05-27 20:35:27 |
| R16.htm | 6721 | 2021-05-27 20:35:27 |
| R17.htm | 5457 | 2021-05-27 20:35:27 |
| R18.htm | 92460 | 2021-05-27 20:35:27 |
| R19.htm | 55423 | 2021-05-27 20:35:27 |
| R2.htm | 111889 | 2021-05-27 20:35:27 |
| R20.htm | 21319 | 2021-05-27 20:35:27 |
| R21.htm | 7620 | 2021-05-27 20:35:27 |
| R22.htm | 11973 | 2021-05-27 20:35:27 |
| R23.htm | 6522 | 2021-05-27 20:35:27 |
| R24.htm | 13591 | 2021-05-27 20:35:27 |
| R25.htm | 276039 | 2021-05-27 20:35:27 |
| R26.htm | 161115 | 2021-05-27 20:35:27 |
| R27.htm | 38384 | 2021-05-27 20:35:27 |
| R28.htm | 29401 | 2021-05-27 20:35:27 |
| R29.htm | 43183 | 2021-05-27 20:35:27 |
| R3.htm | 45885 | 2021-05-27 20:35:27 |
| R30.htm | 36293 | 2021-05-27 20:35:27 |
| R31.htm | 99931 | 2021-05-27 20:35:27 |
| R32.htm | 90745 | 2021-05-27 20:35:27 |
| R33.htm | 52405 | 2021-05-27 20:35:27 |
| R34.htm | 18090 | 2021-05-27 20:35:27 |
| R35.htm | 4144 | 2021-05-27 20:35:27 |
| R36.htm | 4387 | 2021-05-27 20:35:27 |
| R37.htm | 21106 | 2021-05-27 20:35:27 |
| R38.htm | 13325 | 2021-05-27 20:35:27 |
| R39.htm | 30075 | 2021-05-27 20:35:27 |
| R4.htm | 82955 | 2021-05-27 20:35:27 |
| R40.htm | 46645 | 2021-05-27 20:35:27 |
| R41.htm | 11235 | 2021-05-27 20:35:27 |
| R42.htm | 23258 | 2021-05-27 20:35:27 |
| R43.htm | 20202 | 2021-05-27 20:35:27 |
| R44.htm | 8271 | 2021-05-27 20:35:27 |
| R45.htm | 15302 | 2021-05-27 20:35:27 |
| R46.htm | 13728 | 2021-05-27 20:35:27 |
| R47.htm | 5352 | 2021-05-27 20:35:27 |
| R48.htm | 20361 | 2021-05-27 20:35:27 |
| R49.htm | 35372 | 2021-05-27 20:35:27 |
| R5.htm | 9121 | 2021-05-27 20:35:27 |
| R50.htm | 14603 | 2021-05-27 20:35:27 |
| R51.htm | 30699 | 2021-05-27 20:35:27 |
| R52.htm | 19322 | 2021-05-27 20:35:27 |
| R53.htm | 22442 | 2021-05-27 20:35:27 |
| R54.htm | 76590 | 2021-05-27 20:35:27 |
| R55.htm | 19424 | 2021-05-27 20:35:27 |
| R56.htm | 5848 | 2021-05-27 20:35:27 |
| R57.htm | 25085 | 2021-05-27 20:35:27 |
| R58.htm | 7269 | 2021-05-27 20:35:27 |
| R59.htm | 6487 | 2021-05-27 20:35:27 |
| R6.htm | 27091 | 2021-05-27 20:35:27 |
| R60.htm | 10927 | 2021-05-27 20:35:27 |
| R61.htm | 35976 | 2021-05-27 20:35:27 |
| R62.htm | 4702 | 2021-05-27 20:35:27 |
| R63.htm | 24755 | 2021-05-27 20:35:27 |
| R64.htm | 13871 | 2021-05-27 20:35:27 |
| R65.htm | 36539 | 2021-05-27 20:35:27 |
| R66.htm | 16528 | 2021-05-27 20:35:27 |
| R67.htm | 18590 | 2021-05-27 20:35:27 |
| R68.htm | 24433 | 2021-05-27 20:35:27 |
| R69.htm | 10680 | 2021-05-27 20:35:27 |
| R7.htm | 95195 | 2021-05-27 20:35:27 |
| R70.htm | 77805 | 2021-05-27 20:35:27 |
| R8.htm | 7983 | 2021-05-27 20:35:27 |
| R9.htm | 210056 | 2021-05-27 20:35:27 |
| report.css | 2767 | 2021-05-27 20:35:27 |
| Show.js | 1085 | 2021-05-27 20:35:27 |
| tm2116340d1_10q.htm | 837607 | 2021-05-27 20:35:27 |
| tm2116340d1_ex31-1.htm | 15085 | 2021-05-27 20:35:27 |
| tm2116340d1_ex31-2.htm | 15236 | 2021-05-27 20:35:27 |
| tm2116340d1_ex32-1.htm | 6068 | 2021-05-27 20:35:27 |
| tm2116340d1_ex32-2.htm | 6141 | 2021-05-27 20:35:27 |