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|---|---|---|
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| 0000031791-22-000006-index.html | 2022-05-10 14:14:06 | |
| 0000031791-22-000006.txt | 2022-05-10 14:14:06 | |
 0000031791-22-000006-xbrl.zip | 447944 | 2022-05-10 14:14:06 |
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| pki-04032022xex_311.htm | 10644 | 2022-05-10 14:14:06 |
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| pki-04032022xex_321.htm | 7926 | 2022-05-10 14:14:06 |
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| report.css | 2767 | 2022-05-10 14:14:06 |
| Show.js | 1085 | 2022-05-10 14:14:06 |