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| 0000914025-21-000052-index.html | 2021-07-30 16:44:36 | |
| 0000914025-21-000052.txt | 2021-07-30 16:44:36 | |
 0000914025-21-000052-xbrl.zip | 372413 | 2021-07-30 16:44:36 |
| exhibit101wsletter.htm | 44729 | 2021-07-30 16:44:36 |
| exhibit102wssevagmt.htm | 172960 | 2021-07-30 16:44:36 |
| exhibit311q122.htm | 9930 | 2021-07-30 16:44:36 |
| exhibit312q122.htm | 10029 | 2021-07-30 16:44:36 |
| exhibit321q122.htm | 9612 | 2021-07-30 16:44:36 |
| FilingSummary.xml | 36974 | 2021-07-30 16:44:36 |
| Financial_Report.xlsx | 92112 | 2021-07-30 16:44:36 |
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 poly-20210703_g1.jpg | 85101 | 2021-07-30 16:44:36 |
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| poly-20210703_htm.xml | 1418583 | 2021-07-30 16:44:36 |
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| report.css | 2767 | 2021-07-30 16:44:36 |
| Show.js | 1085 | 2021-07-30 16:44:36 |