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| 0000872248-18-000035-index.html | 2018-05-08 16:53:18 | |
| 0000872248-18-000035.txt | 2018-05-08 16:53:18 | |
 0000872248-18-000035-xbrl.zip | 135365 | 2018-05-08 16:53:18 |
| exhibit101novpsa.htm | 299773 | 2018-05-08 16:53:18 |
| FilingSummary.xml | 24967 | 2018-05-08 16:53:18 |
| Financial_Report.xlsx | 50594 | 2018-05-08 16:53:18 |
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| pq-20180331.xsd | 36975 | 2018-05-08 16:53:18 |
| pq-20180331_cal.xml | 70972 | 2018-05-08 16:53:18 |
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| pq3311810qex311.htm | 10430 | 2018-05-08 16:53:18 |
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| report.css | 2767 | 2018-05-08 16:53:18 |
| Show.js | 1410 | 2018-05-08 16:53:18 |