Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-22-017544-index-headers.html | 2022-06-21 08:00:28 | |
| 0001628280-22-017544-index.html | 2022-06-21 08:00:28 | |
| 0001628280-22-017544.txt | 2022-06-21 08:00:28 | |
 0001628280-22-017544-xbrl.zip | 15671 | 2022-06-21 08:00:28 |
| FilingSummary.xml | 1639 | 2022-06-21 08:00:28 |
| Financial_Report.xlsx | 5572 | 2022-06-21 08:00:28 |
| MetaLinks.json | 14579 | 2022-06-21 08:00:28 |
| opc-20220617.htm | 42682 | 2022-06-21 08:00:28 |
| opc-20220617.xsd | 1884 | 2022-06-21 08:00:28 |
| opc-20220617_htm.xml | 10189 | 2022-06-21 08:00:28 |
| opc-20220617_lab.xml | 21063 | 2022-06-21 08:00:28 |
| opc-20220617_pre.xml | 10961 | 2022-06-21 08:00:28 |
| pressreleasedated061822.htm | 6260 | 2022-06-21 08:00:28 |
 pressreleasedated061822001.jpg | 138340 | 2022-06-21 08:00:28 |
 pressreleasedated061822002.jpg | 172753 | 2022-06-21 08:00:28 |
 pressreleasedated061822003.jpg | 118307 | 2022-06-21 08:00:28 |
| R1.htm | 33753 | 2022-06-21 08:00:28 |
| report.css | 2767 | 2022-06-21 08:00:28 |
| Show.js | 1085 | 2022-06-21 08:00:28 |