Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-19-015965-index-headers.html | 2019-05-06 16:03:03 | |
| 0001564590-19-015965-index.html | 2019-05-06 16:03:03 | |
| 0001564590-19-015965.txt | 2019-05-06 16:03:03 | |
 0001564590-19-015965-xbrl.zip | 111617 | 2019-05-06 16:03:03 |
| FilingSummary.xml | 40124 | 2019-05-06 16:03:03 |
| Financial_Report.xlsx | 58231 | 2019-05-06 16:03:03 |
| pk-10q_20190331.htm | 2178013 | 2019-05-06 16:03:03 |
| pk-20190331.xml | 1210219 | 2019-05-06 16:03:03 |
| pk-20190331.xsd | 51775 | 2019-05-06 16:03:03 |
| pk-20190331_cal.xml | 62718 | 2019-05-06 16:03:03 |
| pk-20190331_def.xml | 155422 | 2019-05-06 16:03:03 |
| pk-20190331_lab.xml | 366588 | 2019-05-06 16:03:03 |
| pk-20190331_pre.xml | 295320 | 2019-05-06 16:03:03 |
| pk-ex311_12.htm | 17925 | 2019-05-06 16:03:03 |
| pk-ex312_13.htm | 17824 | 2019-05-06 16:03:03 |
| pk-ex321_11.htm | 10138 | 2019-05-06 16:03:03 |
| pk-ex322_10.htm | 10104 | 2019-05-06 16:03:03 |
| R1.htm | 25621 | 2019-05-06 16:03:03 |
| R10.htm | 12585 | 2019-05-06 16:03:03 |
| R11.htm | 6672 | 2019-05-06 16:03:03 |
| R12.htm | 38699 | 2019-05-06 16:03:03 |
| R13.htm | 65340 | 2019-05-06 16:03:03 |
| R14.htm | 82254 | 2019-05-06 16:03:03 |
| R15.htm | 62192 | 2019-05-06 16:03:03 |
| R16.htm | 43757 | 2019-05-06 16:03:03 |
| R17.htm | 7197 | 2019-05-06 16:03:03 |
| R18.htm | 57062 | 2019-05-06 16:03:03 |
| R19.htm | 56230 | 2019-05-06 16:03:03 |
| R2.htm | 75309 | 2019-05-06 16:03:03 |
| R20.htm | 99422 | 2019-05-06 16:03:03 |
| R21.htm | 7697 | 2019-05-06 16:03:03 |
| R22.htm | 6864 | 2019-05-06 16:03:03 |
| R23.htm | 17802 | 2019-05-06 16:03:03 |
| R24.htm | 34736 | 2019-05-06 16:03:03 |
| R25.htm | 68627 | 2019-05-06 16:03:03 |
| R26.htm | 82682 | 2019-05-06 16:03:03 |
| R27.htm | 60150 | 2019-05-06 16:03:03 |
| R28.htm | 44438 | 2019-05-06 16:03:03 |
| R29.htm | 57776 | 2019-05-06 16:03:03 |
| R3.htm | 17124 | 2019-05-06 16:03:03 |
| R30.htm | 55891 | 2019-05-06 16:03:03 |
| R31.htm | 96260 | 2019-05-06 16:03:03 |
| R32.htm | 5371 | 2019-05-06 16:03:03 |
| R33.htm | 19100 | 2019-05-06 16:03:03 |
| R34.htm | 11083 | 2019-05-06 16:03:03 |
| R35.htm | 18859 | 2019-05-06 16:03:03 |
| R36.htm | 18093 | 2019-05-06 16:03:03 |
| R37.htm | 5933 | 2019-05-06 16:03:03 |
| R38.htm | 30573 | 2019-05-06 16:03:03 |
| R39.htm | 15269 | 2019-05-06 16:03:03 |
| R4.htm | 99938 | 2019-05-06 16:03:03 |
| R40.htm | 41340 | 2019-05-06 16:03:03 |
| R41.htm | 5935 | 2019-05-06 16:03:03 |
| R42.htm | 7386 | 2019-05-06 16:03:03 |
| R43.htm | 18353 | 2019-05-06 16:03:03 |
| R44.htm | 20091 | 2019-05-06 16:03:03 |
| R45.htm | 11577 | 2019-05-06 16:03:03 |
| R46.htm | 19711 | 2019-05-06 16:03:03 |
| R47.htm | 11624 | 2019-05-06 16:03:03 |
| R48.htm | 5039 | 2019-05-06 16:03:03 |
| R49.htm | 12515 | 2019-05-06 16:03:03 |
| R5.htm | 5043 | 2019-05-06 16:03:03 |
| R50.htm | 33948 | 2019-05-06 16:03:03 |
| R51.htm | 23292 | 2019-05-06 16:03:03 |
| R52.htm | 18796 | 2019-05-06 16:03:03 |
| R53.htm | 10311 | 2019-05-06 16:03:03 |
| R54.htm | 26651 | 2019-05-06 16:03:03 |
| R55.htm | 6348 | 2019-05-06 16:03:03 |
| R56.htm | 42772 | 2019-05-06 16:03:03 |
| R57.htm | 9504 | 2019-05-06 16:03:03 |
| R58.htm | 14611 | 2019-05-06 16:03:03 |
| R59.htm | 22383 | 2019-05-06 16:03:03 |
| R6.htm | 71502 | 2019-05-06 16:03:03 |
| R7.htm | 37453 | 2019-05-06 16:03:03 |
| R8.htm | 4484 | 2019-05-06 16:03:03 |
| R9.htm | 6136 | 2019-05-06 16:03:03 |
| report.css | 2767 | 2019-05-06 16:03:03 |
| Show.js | 1085 | 2019-05-06 16:03:03 |