Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001559053-20-000040-index-headers.html | 2020-11-04 16:51:55 | |
| 0001559053-20-000040-index.html | 2020-11-04 16:51:55 | |
| 0001559053-20-000040.txt | 2020-11-04 16:51:55 | |
 0001559053-20-000040-xbrl.zip | 261898 | 2020-11-04 16:51:55 |
| FilingSummary.xml | 26311 | 2020-11-04 16:51:55 |
| Financial_Report.xlsx | 73210 | 2020-11-04 16:51:55 |
| MetaLinks.json | 460986 | 2020-11-04 16:51:55 |
| prta-20200930.htm | 1346401 | 2020-11-04 16:51:55 |
| prta-20200930.xsd | 45660 | 2020-11-04 16:51:55 |
| prta-20200930_cal.xml | 81688 | 2020-11-04 16:51:55 |
| prta-20200930_def.xml | 174066 | 2020-11-04 16:51:55 |
| prta-20200930_htm.xml | 803999 | 2020-11-04 16:51:55 |
| prta-20200930_lab.xml | 541659 | 2020-11-04 16:51:55 |
| prta-20200930_pre.xml | 320303 | 2020-11-04 16:51:55 |
| prta2020q310-qxex311.htm | 11357 | 2020-11-04 16:51:55 |
| prta2020q310-qxex312.htm | 11378 | 2020-11-04 16:51:55 |
| prta2020q310-qxex321.htm | 9618 | 2020-11-04 16:51:55 |
| prta2020q3xex1013rdame.htm | 5757 | 2020-11-04 16:51:55 |
| R1.htm | 55326 | 2020-11-04 16:51:55 |
| R10.htm | 21899 | 2020-11-04 16:51:55 |
| R11.htm | 23308 | 2020-11-04 16:51:55 |
| R12.htm | 48657 | 2020-11-04 16:51:55 |
| R13.htm | 68769 | 2020-11-04 16:51:55 |
| R14.htm | 6255 | 2020-11-04 16:51:55 |
| R15.htm | 53995 | 2020-11-04 16:51:55 |
| R16.htm | 8937 | 2020-11-04 16:51:55 |
| R17.htm | 20778 | 2020-11-04 16:51:55 |
| R18.htm | 23029 | 2020-11-04 16:51:55 |
| R19.htm | 25143 | 2020-11-04 16:51:55 |
| R2.htm | 82216 | 2020-11-04 16:51:55 |
| R20.htm | 36597 | 2020-11-04 16:51:55 |
| R21.htm | 48160 | 2020-11-04 16:51:55 |
| R22.htm | 8265 | 2020-11-04 16:51:55 |
| R23.htm | 9664 | 2020-11-04 16:51:55 |
| R24.htm | 6763 | 2020-11-04 16:51:55 |
| R25.htm | 17059 | 2020-11-04 16:51:55 |
| R26.htm | 5326 | 2020-11-04 16:51:55 |
| R27.htm | 12323 | 2020-11-04 16:51:55 |
| R28.htm | 14294 | 2020-11-04 16:51:55 |
| R29.htm | 7353 | 2020-11-04 16:51:55 |
| R3.htm | 18294 | 2020-11-04 16:51:55 |
| R30.htm | 54623 | 2020-11-04 16:51:55 |
| R31.htm | 11315 | 2020-11-04 16:51:55 |
| R32.htm | 29176 | 2020-11-04 16:51:55 |
| R33.htm | 14610 | 2020-11-04 16:51:55 |
| R34.htm | 44286 | 2020-11-04 16:51:55 |
| R35.htm | 73045 | 2020-11-04 16:51:55 |
| R36.htm | 46289 | 2020-11-04 16:51:55 |
| R37.htm | 18255 | 2020-11-04 16:51:55 |
| R38.htm | 48829 | 2020-11-04 16:51:55 |
| R39.htm | 9975 | 2020-11-04 16:51:55 |
| R4.htm | 40699 | 2020-11-04 16:51:55 |
| R40.htm | 14836 | 2020-11-04 16:51:55 |
| R41.htm | 55509 | 2020-11-04 16:51:55 |
| R42.htm | 23806 | 2020-11-04 16:51:55 |
| R5.htm | 65590 | 2020-11-04 16:51:55 |
| R6.htm | 31112 | 2020-11-04 16:51:55 |
| R7.htm | 9670 | 2020-11-04 16:51:55 |
| R8.htm | 14142 | 2020-11-04 16:51:55 |
| R9.htm | 9724 | 2020-11-04 16:51:55 |
| report.css | 2767 | 2020-11-04 16:51:55 |
| Show.js | 1085 | 2020-11-04 16:51:55 |