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|---|---|---|
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| 0000070415-17-000132-index.html | 2017-11-02 12:09:53 | |
| 0000070415-17-000132.txt | 2017-11-02 12:09:53 | |
 0000070415-17-000132-xbrl.zip | 146732 | 2017-11-02 12:09:53 |
| exhibit311-gpx93017.htm | 12597 | 2017-11-02 12:09:53 |
| exhibit312-gpx93017.htm | 13528 | 2017-11-02 12:09:53 |
| exhibit321-gpx93017.htm | 8823 | 2017-11-02 12:09:53 |
| FilingSummary.xml | 23545 | 2017-11-02 12:09:53 |
| Financial_Report.xlsx | 54079 | 2017-11-02 12:09:53 |
| gpx-20170930.htm | 938638 | 2017-11-02 12:09:53 |
| gpx-20170930.xml | 1199661 | 2017-11-02 12:09:53 |
| gpx-20170930.xsd | 33949 | 2017-11-02 12:09:53 |
| gpx-20170930_cal.xml | 64522 | 2017-11-02 12:09:53 |
| gpx-20170930_def.xml | 181741 | 2017-11-02 12:09:53 |
| gpx-20170930_lab.xml | 507663 | 2017-11-02 12:09:53 |
| gpx-20170930_pre.xml | 285323 | 2017-11-02 12:09:53 |
| R1.htm | 21768 | 2017-11-02 12:09:53 |
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| R8.htm | 14479 | 2017-11-02 12:09:53 |
| R9.htm | 10605 | 2017-11-02 12:09:53 |
| report.css | 2767 | 2017-11-02 12:09:53 |
| Show.js | 1410 | 2017-11-02 12:09:53 |