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|---|---|---|
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| 0000070415-18-000106-index.html | 2018-08-01 12:57:26 | |
| 0000070415-18-000106.txt | 2018-08-01 12:57:26 | |
 0000070415-18-000106-xbrl.zip | 175835 | 2018-08-01 12:57:26 |
| exhibit1012018ltip.htm | 12986 | 2018-08-01 12:57:26 |
| exhibit311-gpx63018.htm | 12595 | 2018-08-01 12:57:26 |
| exhibit312-gpx63018.htm | 13487 | 2018-08-01 12:57:26 |
| exhibit321-gpx63018.htm | 8806 | 2018-08-01 12:57:26 |
| FilingSummary.xml | 26050 | 2018-08-01 12:57:26 |
| Financial_Report.xlsx | 65748 | 2018-08-01 12:57:26 |
| gpx-20180630.htm | 1179647 | 2018-08-01 12:57:26 |
| gpx-20180630.xml | 1958826 | 2018-08-01 12:57:26 |
| gpx-20180630.xsd | 37880 | 2018-08-01 12:57:26 |
| gpx-20180630_cal.xml | 59511 | 2018-08-01 12:57:26 |
| gpx-20180630_def.xml | 209049 | 2018-08-01 12:57:26 |
| gpx-20180630_lab.xml | 488476 | 2018-08-01 12:57:26 |
| gpx-20180630_pre.xml | 307072 | 2018-08-01 12:57:26 |
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| R9.htm | 278768 | 2018-08-01 12:57:26 |
| report.css | 2767 | 2018-08-01 12:57:26 |
| Show.js | 1410 | 2018-08-01 12:57:26 |