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| 0000872248-18-000023-index.html | 2018-04-27 14:38:31 | |
| 0000872248-18-000023.txt | 2018-04-27 14:38:31 | |
 0000872248-18-000023-xbrl.zip | 317883 | 2018-04-27 14:38:31 |
| exhibit233123117.htm | 6136 | 2018-04-27 14:38:31 |
| exhibit315123117.htm | 4855 | 2018-04-27 14:38:31 |
| exhibit316123117.htm | 4831 | 2018-04-27 14:38:31 |
| exhibit323123117.htm | 5226 | 2018-04-27 14:38:31 |
| exhibit324123117.htm | 5315 | 2018-04-27 14:38:31 |
| FilingSummary.xml | 45964 | 2018-04-27 14:38:31 |
| Financial_Report.xlsx | 104222 | 2018-04-27 14:38:31 |
| pq-20171231.xml | 2143393 | 2018-04-27 14:38:31 |
| pq-20171231.xsd | 72901 | 2018-04-27 14:38:31 |
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| pq-20171231_def.xml | 419790 | 2018-04-27 14:38:31 |
| pq-20171231_lab.xml | 988836 | 2018-04-27 14:38:31 |
| pq-20171231_pre.xml | 617501 | 2018-04-27 14:38:31 |
| pq12311710k-aopinion.htm | 1307030 | 2018-04-27 14:38:31 |
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| report.css | 2767 | 2018-04-27 14:38:31 |
| Show.js | 1410 | 2018-04-27 14:38:31 |