Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-23-039780-index-headers.html | 2023-08-08 16:06:25 | |
| 0000950170-23-039780-index.html | 2023-08-08 16:06:25 | |
| 0000950170-23-039780.txt | 2023-08-08 16:06:25 | |
 0000950170-23-039780-xbrl.zip | 16472 | 2023-08-08 16:06:25 |
| FilingSummary.xml | 1733 | 2023-08-08 16:06:25 |
| Financial_Report.xlsx | 5758 | 2023-08-08 16:06:25 |
 img265366334_0.jpg | 25951 | 2023-08-08 16:06:25 |
| MetaLinks.json | 18197 | 2023-08-08 16:06:25 |
| pstx-20230808.htm | 57446 | 2023-08-08 16:06:25 |
| pstx-20230808.xsd | 2454 | 2023-08-08 16:06:25 |
| pstx-20230808_htm.xml | 4723 | 2023-08-08 16:06:25 |
| pstx-20230808_lab.xml | 13350 | 2023-08-08 16:06:25 |
| pstx-20230808_pre.xml | 9830 | 2023-08-08 16:06:25 |
| pstx-ex99_1.htm | 172158 | 2023-08-08 16:06:25 |
| R1.htm | 39891 | 2023-08-08 16:06:25 |
| report.css | 2767 | 2023-08-08 16:06:25 |
| Show.js | 1085 | 2023-08-08 16:06:25 |