Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000070415-21-000105-index-headers.html | 2021-08-09 07:12:18 | |
| 0000070415-21-000105-index.html | 2021-08-09 07:12:18 | |
| 0000070415-21-000105.txt | 2021-08-09 07:12:18 | |
 0000070415-21-000105-xbrl.zip | 23188 | 2021-08-09 07:12:18 |
| earningsrelease-gpx06302021.htm | 212807 | 2021-08-09 07:12:18 |
| FilingSummary.xml | 1640 | 2021-08-09 07:12:18 |
| Financial_Report.xlsx | 5690 | 2021-08-09 07:12:18 |
 gpstrategieslogo2020cmykhi.jpg | 922111 | 2021-08-09 07:12:18 |
| gpx-20210809.htm | 39987 | 2021-08-09 07:12:18 |
| gpx-20210809.xsd | 1908 | 2021-08-09 07:12:18 |
| gpx-20210809_htm.xml | 11285 | 2021-08-09 07:12:18 |
| gpx-20210809_lab.xml | 24849 | 2021-08-09 07:12:18 |
| gpx-20210809_pre.xml | 13051 | 2021-08-09 07:12:18 |
| MetaLinks.json | 17240 | 2021-08-09 07:12:18 |
| R1.htm | 40139 | 2021-08-09 07:12:18 |
| report.css | 2767 | 2021-08-09 07:12:18 |
| Show.js | 1085 | 2021-08-09 07:12:18 |