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|---|---|---|
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| 0000076334-22-000018.txt | 2022-05-06 08:34:31 | |
 0000076334-22-000018-xbrl.zip | 274875 | 2022-05-06 08:34:31 |
| ex10a2022ltipplanamended.htm | 40528 | 2022-05-06 08:34:31 |
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 ex10b2022officerltipawar012.jpg | 196425 | 2022-05-06 08:34:31 |
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| Financial_Report.xlsx | 89224 | 2022-05-06 08:34:31 |
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| ph-20220331.htm | 2369355 | 2022-05-06 08:34:31 |
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| ph3312022ex31a.htm | 9881 | 2022-05-06 08:34:31 |
| ph3312022ex31b.htm | 10188 | 2022-05-06 08:34:31 |
| ph3312022ex32.htm | 6044 | 2022-05-06 08:34:31 |
| R1.htm | 50994 | 2022-05-06 08:34:31 |
| R10.htm | 70157 | 2022-05-06 08:34:31 |
| R11.htm | 6768 | 2022-05-06 08:34:31 |
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| R59.htm | 35990 | 2022-05-06 08:34:31 |
| R6.htm | 108180 | 2022-05-06 08:34:31 |
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| R7.htm | 47695 | 2022-05-06 08:34:31 |
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| R9.htm | 15166 | 2022-05-06 08:34:31 |
| report.css | 2768 | 2022-05-06 08:34:31 |
| Show.js | 1086 | 2022-05-06 08:34:31 |