Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001558370-22-012849-index-headers.html | 2022-08-09 15:55:55 | |
| 0001558370-22-012849-index.html | 2022-08-09 15:55:55 | |
| 0001558370-22-012849.txt | 2022-08-09 15:55:55 | |
 0001558370-22-012849-xbrl.zip | 525244 | 2022-08-09 15:55:55 |
| FilingSummary.xml | 42891 | 2022-08-09 15:55:55 |
| Financial_Report.xlsx | 167018 | 2022-08-09 15:55:55 |
| frst-20220630.xsd | 64450 | 2022-08-09 15:55:55 |
| frst-20220630x10q.htm | 7652835 | 2022-08-09 15:55:55 |
| frst-20220630x10q_htm.xml | 10137314 | 2022-08-09 15:55:55 |
| frst-20220630xex31d1.htm | 14059 | 2022-08-09 15:55:55 |
| frst-20220630xex31d2.htm | 12139 | 2022-08-09 15:55:55 |
| frst-20220630xex32d1.htm | 11462 | 2022-08-09 15:55:55 |
| frst-20220630_cal.xml | 106992 | 2022-08-09 15:55:55 |
| frst-20220630_def.xml | 468874 | 2022-08-09 15:55:55 |
| frst-20220630_lab.xml | 673913 | 2022-08-09 15:55:55 |
| frst-20220630_pre.xml | 630217 | 2022-08-09 15:55:55 |
| MetaLinks.json | 882529 | 2022-08-09 15:55:55 |
| R1.htm | 52150 | 2022-08-09 15:55:55 |
| R10.htm | 505218 | 2022-08-09 15:55:55 |
| R11.htm | 2511616 | 2022-08-09 15:55:55 |
| R12.htm | 425490 | 2022-08-09 15:55:55 |
| R13.htm | 38793 | 2022-08-09 15:55:55 |
| R14.htm | 6002 | 2022-08-09 15:55:55 |
| R15.htm | 13502 | 2022-08-09 15:55:55 |
| R16.htm | 99226 | 2022-08-09 15:55:55 |
| R17.htm | 22542 | 2022-08-09 15:55:55 |
| R18.htm | 108507 | 2022-08-09 15:55:55 |
| R19.htm | 44327 | 2022-08-09 15:55:55 |
| R2.htm | 124703 | 2022-08-09 15:55:55 |
| R20.htm | 109273 | 2022-08-09 15:55:55 |
| R21.htm | 507565 | 2022-08-09 15:55:55 |
| R22.htm | 2322483 | 2022-08-09 15:55:55 |
| R23.htm | 419377 | 2022-08-09 15:55:55 |
| R24.htm | 38282 | 2022-08-09 15:55:55 |
| R25.htm | 97834 | 2022-08-09 15:55:55 |
| R26.htm | 14688 | 2022-08-09 15:55:55 |
| R27.htm | 107364 | 2022-08-09 15:55:55 |
| R28.htm | 86645 | 2022-08-09 15:55:55 |
| R29.htm | 28984 | 2022-08-09 15:55:55 |
| R3.htm | 22170 | 2022-08-09 15:55:55 |
| R30.htm | 48294 | 2022-08-09 15:55:55 |
| R31.htm | 10234 | 2022-08-09 15:55:55 |
| R32.htm | 26126 | 2022-08-09 15:55:55 |
| R33.htm | 40821 | 2022-08-09 15:55:55 |
| R34.htm | 27810 | 2022-08-09 15:55:55 |
| R35.htm | 85229 | 2022-08-09 15:55:55 |
| R36.htm | 70735 | 2022-08-09 15:55:55 |
| R37.htm | 33216 | 2022-08-09 15:55:55 |
| R38.htm | 45600 | 2022-08-09 15:55:55 |
| R39.htm | 74659 | 2022-08-09 15:55:55 |
| R4.htm | 152279 | 2022-08-09 15:55:55 |
| R40.htm | 203179 | 2022-08-09 15:55:55 |
| R41.htm | 226153 | 2022-08-09 15:55:55 |
| R42.htm | 272862 | 2022-08-09 15:55:55 |
| R43.htm | 94495 | 2022-08-09 15:55:55 |
| R44.htm | 69508 | 2022-08-09 15:55:55 |
| R45.htm | 80650 | 2022-08-09 15:55:55 |
| R46.htm | 28579 | 2022-08-09 15:55:55 |
| R47.htm | 93727 | 2022-08-09 15:55:55 |
| R48.htm | 17328 | 2022-08-09 15:55:55 |
| R49.htm | 31803 | 2022-08-09 15:55:55 |
| R5.htm | 46328 | 2022-08-09 15:55:55 |
| R50.htm | 62642 | 2022-08-09 15:55:55 |
| R51.htm | 9477 | 2022-08-09 15:55:55 |
| R52.htm | 6737 | 2022-08-09 15:55:55 |
| R53.htm | 21024 | 2022-08-09 15:55:55 |
| R54.htm | 6911 | 2022-08-09 15:55:55 |
| R55.htm | 48346 | 2022-08-09 15:55:55 |
| R56.htm | 35827 | 2022-08-09 15:55:55 |
| R57.htm | 37083 | 2022-08-09 15:55:55 |
| R58.htm | 30669 | 2022-08-09 15:55:55 |
| R59.htm | 11990 | 2022-08-09 15:55:55 |
| R6.htm | 7480 | 2022-08-09 15:55:55 |
| R60.htm | 7640 | 2022-08-09 15:55:55 |
| R61.htm | 54053 | 2022-08-09 15:55:55 |
| R7.htm | 114969 | 2022-08-09 15:55:55 |
| R8.htm | 25997 | 2022-08-09 15:55:55 |
| R9.htm | 113797 | 2022-08-09 15:55:55 |
| report.css | 2767 | 2022-08-09 15:55:55 |
| Show.js | 1085 | 2022-08-09 15:55:55 |