Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001683863-20-002697-index-headers.html | 2020-04-09 13:21:26 | |
| 0001683863-20-002697-index.html | 2020-04-09 13:21:26 | |
| 0001683863-20-002697.txt | 2020-04-09 13:21:26 | |
 0001683863-20-002697-xbrl.zip | 30990 | 2020-04-09 13:21:26 |
| f3354d1.htm | 38672 | 2020-04-09 13:21:26 |
| FilingSummary.xml | 3452 | 2020-04-09 13:21:26 |
| Financial_Report.xlsx | 9080 | 2020-04-09 13:21:26 |
| pstx-20200401.xml | 80757 | 2020-04-09 13:21:26 |
| pstx-20200401.xsd | 13018 | 2020-04-09 13:21:26 |
| pstx-20200401_def.xml | 106316 | 2020-04-09 13:21:26 |
| pstx-20200401_lab.xml | 187784 | 2020-04-09 13:21:26 |
| pstx-20200401_pre.xml | 95900 | 2020-04-09 13:21:26 |
| R1.htm | 18252 | 2020-04-09 13:21:26 |
| R2.htm | 6038 | 2020-04-09 13:21:26 |
| R3.htm | 137161 | 2020-04-09 13:21:26 |
| R4.htm | 7485 | 2020-04-09 13:21:26 |
| report.css | 2767 | 2020-04-09 13:21:26 |
| Show.js | 1084 | 2020-04-09 13:21:26 |