Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001706397-20-000007-index-headers.html | 2020-05-07 16:25:18 | |
| 0001706397-20-000007-index.html | 2020-05-07 16:25:18 | |
| 0001706397-20-000007.txt | 2020-05-07 16:25:18 | |
 0001706397-20-000007-xbrl.zip | 584762 | 2020-05-07 16:25:18 |
| FilingSummary.xml | 43227 | 2020-05-07 16:25:18 |
| Financial_Report.xlsx | 117458 | 2020-05-07 16:25:18 |
| MetaLinks.json | 751158 | 2020-05-07 16:25:18 |
| pra-20200331.xsd | 64138 | 2020-05-07 16:25:18 |
| pra-20200331ex311.htm | 7978 | 2020-05-07 16:25:18 |
| pra-20200331ex321.htm | 5149 | 2020-05-07 16:25:18 |
| pra-20200331x10q.htm | 4160438 | 2020-05-07 16:25:18 |
| pra-20200331x10q_htm.xml | 3376624 | 2020-05-07 16:25:18 |
| pra-20200331xex312.htm | 7976 | 2020-05-07 16:25:18 |
| pra-20200331xex322.htm | 5146 | 2020-05-07 16:25:18 |
| pra-20200331_cal.xml | 119266 | 2020-05-07 16:25:18 |
| pra-20200331_def.xml | 373038 | 2020-05-07 16:25:18 |
| pra-20200331_lab.xml | 921068 | 2020-05-07 16:25:18 |
| pra-20200331_pre.xml | 565931 | 2020-05-07 16:25:18 |
| pra20200331ex101a01.htm | 364143 | 2020-05-07 16:25:18 |
 pra20200331ex101a01001.jpg | 43421 | 2020-05-07 16:25:18 |
 pra20200331ex101a01002.jpg | 175349 | 2020-05-07 16:25:18 |
 pra20200331ex101a01003.jpg | 194197 | 2020-05-07 16:25:18 |
 pra20200331ex101a01004.jpg | 110350 | 2020-05-07 16:25:18 |
 pra20200331ex101a01005.jpg | 247611 | 2020-05-07 16:25:18 |
 pra20200331ex101a01006.jpg | 222165 | 2020-05-07 16:25:18 |
 pra20200331ex101a01007.jpg | 260955 | 2020-05-07 16:25:18 |
 pra20200331ex101a01008.jpg | 303745 | 2020-05-07 16:25:18 |
 pra20200331ex101a01009.jpg | 288300 | 2020-05-07 16:25:18 |
 pra20200331ex101a01010.jpg | 289277 | 2020-05-07 16:25:18 |
 pra20200331ex101a01011.jpg | 175410 | 2020-05-07 16:25:18 |
 pra20200331ex101a01012.jpg | 116236 | 2020-05-07 16:25:18 |
 pra20200331ex101a01013.jpg | 133993 | 2020-05-07 16:25:18 |
 pra20200331ex101a01014.jpg | 114291 | 2020-05-07 16:25:18 |
 pra20200331ex101a01015.jpg | 52631 | 2020-05-07 16:25:18 |
 pra20200331ex101a01016.jpg | 263947 | 2020-05-07 16:25:18 |
 pra20200331ex101a01017.jpg | 203796 | 2020-05-07 16:25:18 |
 pra20200331ex101a01018.jpg | 273522 | 2020-05-07 16:25:18 |
 pra20200331ex101a01019.jpg | 325438 | 2020-05-07 16:25:18 |
 pra20200331ex101a01020.jpg | 301328 | 2020-05-07 16:25:18 |
 pra20200331ex101a01021.jpg | 315069 | 2020-05-07 16:25:18 |
 pra20200331ex101a01022.jpg | 320939 | 2020-05-07 16:25:18 |
 pra20200331ex101a01023.jpg | 273500 | 2020-05-07 16:25:18 |
 pra20200331ex101a01024.jpg | 297300 | 2020-05-07 16:25:18 |
 pra20200331ex101a01025.jpg | 280481 | 2020-05-07 16:25:18 |
 pra20200331ex101a01026.jpg | 296362 | 2020-05-07 16:25:18 |
 pra20200331ex101a01027.jpg | 290198 | 2020-05-07 16:25:18 |
 pra20200331ex101a01028.jpg | 225906 | 2020-05-07 16:25:18 |
 pra20200331ex101a01029.jpg | 260402 | 2020-05-07 16:25:18 |
 pra20200331ex101a01030.jpg | 295440 | 2020-05-07 16:25:18 |
 pra20200331ex101a01031.jpg | 293168 | 2020-05-07 16:25:18 |
 pra20200331ex101a01032.jpg | 297751 | 2020-05-07 16:25:18 |
 pra20200331ex101a01033.jpg | 295091 | 2020-05-07 16:25:18 |
 pra20200331ex101a01034.jpg | 306207 | 2020-05-07 16:25:18 |
 pra20200331ex101a01035.jpg | 292528 | 2020-05-07 16:25:18 |
 pra20200331ex101a01036.jpg | 266011 | 2020-05-07 16:25:18 |
 pra20200331ex101a01037.jpg | 318611 | 2020-05-07 16:25:18 |
 pra20200331ex101a01038.jpg | 275344 | 2020-05-07 16:25:18 |
 pra20200331ex101a01039.jpg | 315939 | 2020-05-07 16:25:18 |
 pra20200331ex101a01040.jpg | 289324 | 2020-05-07 16:25:18 |
 pra20200331ex101a01041.jpg | 300119 | 2020-05-07 16:25:18 |
 pra20200331ex101a01042.jpg | 278546 | 2020-05-07 16:25:18 |
 pra20200331ex101a01043.jpg | 295683 | 2020-05-07 16:25:18 |
 pra20200331ex101a01044.jpg | 292174 | 2020-05-07 16:25:18 |
 pra20200331ex101a01045.jpg | 273575 | 2020-05-07 16:25:18 |
 pra20200331ex101a01046.jpg | 303869 | 2020-05-07 16:25:18 |
 pra20200331ex101a01047.jpg | 220463 | 2020-05-07 16:25:18 |
 pra20200331ex101a01048.jpg | 297208 | 2020-05-07 16:25:18 |
 pra20200331ex101a01049.jpg | 288906 | 2020-05-07 16:25:18 |
 pra20200331ex101a01050.jpg | 291523 | 2020-05-07 16:25:18 |
 pra20200331ex101a01051.jpg | 313784 | 2020-05-07 16:25:18 |
 pra20200331ex101a01052.jpg | 272678 | 2020-05-07 16:25:18 |
 pra20200331ex101a01053.jpg | 301961 | 2020-05-07 16:25:18 |
 pra20200331ex101a01054.jpg | 318021 | 2020-05-07 16:25:18 |
 pra20200331ex101a01055.jpg | 324834 | 2020-05-07 16:25:18 |
 pra20200331ex101a01056.jpg | 264140 | 2020-05-07 16:25:18 |
 pra20200331ex101a01057.jpg | 300828 | 2020-05-07 16:25:18 |
 pra20200331ex101a01058.jpg | 283028 | 2020-05-07 16:25:18 |
 pra20200331ex101a01059.jpg | 274246 | 2020-05-07 16:25:18 |
 pra20200331ex101a01060.jpg | 307885 | 2020-05-07 16:25:18 |
 pra20200331ex101a01061.jpg | 316522 | 2020-05-07 16:25:18 |
 pra20200331ex101a01062.jpg | 266174 | 2020-05-07 16:25:18 |
 pra20200331ex101a01063.jpg | 259372 | 2020-05-07 16:25:18 |
 pra20200331ex101a01064.jpg | 260402 | 2020-05-07 16:25:18 |
 pra20200331ex101a01065.jpg | 274643 | 2020-05-07 16:25:18 |
 pra20200331ex101a01066.jpg | 200685 | 2020-05-07 16:25:18 |
 pra20200331ex101a01067.jpg | 325057 | 2020-05-07 16:25:18 |
 pra20200331ex101a01068.jpg | 296639 | 2020-05-07 16:25:18 |
 pra20200331ex101a01069.jpg | 312637 | 2020-05-07 16:25:18 |
 pra20200331ex101a01070.jpg | 301355 | 2020-05-07 16:25:18 |
 pra20200331ex101a01071.jpg | 298638 | 2020-05-07 16:25:18 |
 pra20200331ex101a01072.jpg | 269017 | 2020-05-07 16:25:18 |
 pra20200331ex101a01073.jpg | 268660 | 2020-05-07 16:25:18 |
 pra20200331ex101a01074.jpg | 300719 | 2020-05-07 16:25:18 |
 pra20200331ex101a01075.jpg | 301969 | 2020-05-07 16:25:18 |
 pra20200331ex101a01076.jpg | 303843 | 2020-05-07 16:25:18 |
 pra20200331ex101a01077.jpg | 329791 | 2020-05-07 16:25:18 |
 pra20200331ex101a01078.jpg | 313700 | 2020-05-07 16:25:18 |
 pra20200331ex101a01079.jpg | 269999 | 2020-05-07 16:25:18 |
 pra20200331ex101a01080.jpg | 244454 | 2020-05-07 16:25:18 |
 pra20200331ex101a01081.jpg | 256540 | 2020-05-07 16:25:18 |
 pra20200331ex101a01082.jpg | 268624 | 2020-05-07 16:25:18 |
 pra20200331ex101a01083.jpg | 292348 | 2020-05-07 16:25:18 |
 pra20200331ex101a01084.jpg | 277675 | 2020-05-07 16:25:18 |
 pra20200331ex101a01085.jpg | 125039 | 2020-05-07 16:25:18 |
 pra20200331ex101a01086.jpg | 259460 | 2020-05-07 16:25:18 |
 pra20200331ex101a01087.jpg | 308546 | 2020-05-07 16:25:18 |
 pra20200331ex101a01088.jpg | 274443 | 2020-05-07 16:25:18 |
 pra20200331ex101a01089.jpg | 75236 | 2020-05-07 16:25:18 |
 pra20200331ex101a01090.jpg | 122491 | 2020-05-07 16:25:18 |
| R1.htm | 52219 | 2020-05-07 16:25:18 |
| R10.htm | 13250 | 2020-05-07 16:25:18 |
| R11.htm | 49449 | 2020-05-07 16:25:18 |
| R12.htm | 15157 | 2020-05-07 16:25:18 |
| R13.htm | 37529 | 2020-05-07 16:25:18 |
| R14.htm | 19280 | 2020-05-07 16:25:18 |
| R15.htm | 62783 | 2020-05-07 16:25:18 |
| R16.htm | 8428 | 2020-05-07 16:25:18 |
| R17.htm | 18465 | 2020-05-07 16:25:18 |
| R18.htm | 221279 | 2020-05-07 16:25:18 |
| R19.htm | 11603 | 2020-05-07 16:25:18 |
| R2.htm | 90262 | 2020-05-07 16:25:18 |
| R20.htm | 79093 | 2020-05-07 16:25:18 |
| R21.htm | 26756 | 2020-05-07 16:25:18 |
| R22.htm | 351705 | 2020-05-07 16:25:18 |
| R23.htm | 286708 | 2020-05-07 16:25:18 |
| R24.htm | 40783 | 2020-05-07 16:25:18 |
| R25.htm | 38763 | 2020-05-07 16:25:18 |
| R26.htm | 17739 | 2020-05-07 16:25:18 |
| R27.htm | 56934 | 2020-05-07 16:25:18 |
| R28.htm | 17186 | 2020-05-07 16:25:18 |
| R29.htm | 212058 | 2020-05-07 16:25:18 |
| R3.htm | 22987 | 2020-05-07 16:25:18 |
| R30.htm | 22687 | 2020-05-07 16:25:18 |
| R31.htm | 10912 | 2020-05-07 16:25:18 |
| R32.htm | 18654 | 2020-05-07 16:25:18 |
| R33.htm | 131818 | 2020-05-07 16:25:18 |
| R34.htm | 32541 | 2020-05-07 16:25:18 |
| R35.htm | 48934 | 2020-05-07 16:25:18 |
| R36.htm | 49118 | 2020-05-07 16:25:18 |
| R37.htm | 32487 | 2020-05-07 16:25:18 |
| R38.htm | 39040 | 2020-05-07 16:25:18 |
| R39.htm | 27337 | 2020-05-07 16:25:18 |
| R4.htm | 46737 | 2020-05-07 16:25:18 |
| R40.htm | 43369 | 2020-05-07 16:25:18 |
| R41.htm | 40362 | 2020-05-07 16:25:18 |
| R42.htm | 63785 | 2020-05-07 16:25:18 |
| R43.htm | 50985 | 2020-05-07 16:25:18 |
| R44.htm | 10830 | 2020-05-07 16:25:18 |
| R45.htm | 8066 | 2020-05-07 16:25:18 |
| R46.htm | 16650 | 2020-05-07 16:25:18 |
| R47.htm | 10928 | 2020-05-07 16:25:18 |
| R48.htm | 9940 | 2020-05-07 16:25:18 |
| R49.htm | 28332 | 2020-05-07 16:25:18 |
| R5.htm | 84284 | 2020-05-07 16:25:18 |
| R50.htm | 7148 | 2020-05-07 16:25:18 |
| R51.htm | 14381 | 2020-05-07 16:25:18 |
| R52.htm | 36642 | 2020-05-07 16:25:18 |
| R53.htm | 39310 | 2020-05-07 16:25:18 |
| R54.htm | 15179 | 2020-05-07 16:25:18 |
| R55.htm | 10022 | 2020-05-07 16:25:18 |
| R56.htm | 13476 | 2020-05-07 16:25:18 |
| R57.htm | 20182 | 2020-05-07 16:25:18 |
| R58.htm | 30890 | 2020-05-07 16:25:18 |
| R59.htm | 38054 | 2020-05-07 16:25:18 |
| R6.htm | 100387 | 2020-05-07 16:25:18 |
| R60.htm | 7070 | 2020-05-07 16:25:18 |
| R61.htm | 27271 | 2020-05-07 16:25:18 |
| R62.htm | 7337 | 2020-05-07 16:25:18 |
| R63.htm | 23124 | 2020-05-07 16:25:18 |
| R64.htm | 13735 | 2020-05-07 16:25:18 |
| R65.htm | 67956 | 2020-05-07 16:25:18 |
| R66.htm | 36362 | 2020-05-07 16:25:18 |
| R67.htm | 10622 | 2020-05-07 16:25:18 |
| R7.htm | 66892 | 2020-05-07 16:25:18 |
| R8.htm | 371401 | 2020-05-07 16:25:18 |
| R9.htm | 322578 | 2020-05-07 16:25:18 |
 reinsurancechart.jpg | 41130 | 2020-05-07 16:25:18 |
| report.css | 2768 | 2020-05-07 16:25:18 |
| Show.js | 1086 | 2020-05-07 16:25:18 |
 spcrecharta01.jpg | 32938 | 2020-05-07 16:25:18 |