Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001620459-20-000082-index-headers.html | 2020-07-31 16:21:12 | |
| 0001620459-20-000082-index.html | 2020-07-31 16:21:12 | |
| 0001620459-20-000082.txt | 2020-07-31 16:21:12 | |
 0001620459-20-000082-xbrl.zip | 384634 | 2020-07-31 16:21:12 |
| FilingSummary.xml | 38455 | 2020-07-31 16:21:12 |
| Financial_Report.xlsx | 106881 | 2020-07-31 16:21:12 |
| jrvr-20200630.htm | 3818975 | 2020-07-31 16:21:12 |
| jrvr-20200630.xsd | 53218 | 2020-07-31 16:21:12 |
| jrvr-20200630_cal.xml | 109685 | 2020-07-31 16:21:12 |
| jrvr-20200630_def.xml | 330449 | 2020-07-31 16:21:12 |
| jrvr-20200630_htm.xml | 3294059 | 2020-07-31 16:21:12 |
| jrvr-20200630_lab.xml | 719642 | 2020-07-31 16:21:12 |
| jrvr-20200630_pre.xml | 512437 | 2020-07-31 16:21:12 |
| jrvrex31106302020.htm | 13476 | 2020-07-31 16:21:12 |
| jrvrex31206302020.htm | 13438 | 2020-07-31 16:21:12 |
| jrvrex3206302020.htm | 12165 | 2020-07-31 16:21:12 |
| MetaLinks.json | 716591 | 2020-07-31 16:21:12 |
| R1.htm | 55369 | 2020-07-31 16:21:12 |
| R10.htm | 39685 | 2020-07-31 16:21:12 |
| R11.htm | 41800 | 2020-07-31 16:21:12 |
| R12.htm | 54520 | 2020-07-31 16:21:12 |
| R13.htm | 40913 | 2020-07-31 16:21:12 |
| R14.htm | 15163 | 2020-07-31 16:21:12 |
| R15.htm | 232023 | 2020-07-31 16:21:12 |
| R16.htm | 26828 | 2020-07-31 16:21:12 |
| R17.htm | 219602 | 2020-07-31 16:21:12 |
| R18.htm | 6967 | 2020-07-31 16:21:12 |
| R19.htm | 108256 | 2020-07-31 16:21:12 |
| R2.htm | 102893 | 2020-07-31 16:21:12 |
| R20.htm | 4974 | 2020-07-31 16:21:12 |
| R21.htm | 26494 | 2020-07-31 16:21:12 |
| R22.htm | 368301 | 2020-07-31 16:21:12 |
| R23.htm | 76549 | 2020-07-31 16:21:12 |
| R24.htm | 40892 | 2020-07-31 16:21:12 |
| R25.htm | 51324 | 2020-07-31 16:21:12 |
| R26.htm | 38223 | 2020-07-31 16:21:12 |
| R27.htm | 229466 | 2020-07-31 16:21:12 |
| R28.htm | 25858 | 2020-07-31 16:21:12 |
| R29.htm | 214948 | 2020-07-31 16:21:12 |
| R3.htm | 23222 | 2020-07-31 16:21:12 |
| R30.htm | 107452 | 2020-07-31 16:21:12 |
| R31.htm | 53527 | 2020-07-31 16:21:12 |
| R32.htm | 34721 | 2020-07-31 16:21:12 |
| R33.htm | 40522 | 2020-07-31 16:21:12 |
| R34.htm | 46664 | 2020-07-31 16:21:12 |
| R35.htm | 119669 | 2020-07-31 16:21:12 |
| R36.htm | 34487 | 2020-07-31 16:21:12 |
| R37.htm | 54540 | 2020-07-31 16:21:12 |
| R38.htm | 9463 | 2020-07-31 16:21:12 |
| R39.htm | 20743 | 2020-07-31 16:21:12 |
| R4.htm | 91484 | 2020-07-31 16:21:12 |
| R40.htm | 35167 | 2020-07-31 16:21:12 |
| R41.htm | 7314 | 2020-07-31 16:21:12 |
| R42.htm | 17165 | 2020-07-31 16:21:12 |
| R43.htm | 30035 | 2020-07-31 16:21:12 |
| R44.htm | 26557 | 2020-07-31 16:21:12 |
| R45.htm | 8786 | 2020-07-31 16:21:12 |
| R46.htm | 28512 | 2020-07-31 16:21:12 |
| R47.htm | 6517 | 2020-07-31 16:21:12 |
| R48.htm | 50345 | 2020-07-31 16:21:12 |
| R49.htm | 35004 | 2020-07-31 16:21:12 |
| R5.htm | 5715 | 2020-07-31 16:21:12 |
| R50.htm | 15277 | 2020-07-31 16:21:12 |
| R51.htm | 93827 | 2020-07-31 16:21:12 |
| R52.htm | 25780 | 2020-07-31 16:21:12 |
| R53.htm | 17718 | 2020-07-31 16:21:12 |
| R54.htm | 11936 | 2020-07-31 16:21:12 |
| R55.htm | 39933 | 2020-07-31 16:21:12 |
| R56.htm | 27231 | 2020-07-31 16:21:12 |
| R57.htm | 26745 | 2020-07-31 16:21:12 |
| R58.htm | 8475 | 2020-07-31 16:21:12 |
| R59.htm | 14137 | 2020-07-31 16:21:12 |
| R6.htm | 86958 | 2020-07-31 16:21:12 |
| R60.htm | 42057 | 2020-07-31 16:21:12 |
| R61.htm | 33818 | 2020-07-31 16:21:12 |
| R62.htm | 7565 | 2020-07-31 16:21:12 |
| R63.htm | 8257 | 2020-07-31 16:21:12 |
| R64.htm | 9479 | 2020-07-31 16:21:12 |
| R7.htm | 71183 | 2020-07-31 16:21:12 |
| R8.htm | 20905 | 2020-07-31 16:21:12 |
| R9.htm | 304156 | 2020-07-31 16:21:12 |
| report.css | 2767 | 2020-07-31 16:21:12 |
| Show.js | 1085 | 2020-07-31 16:21:12 |