Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001047469-19-003058-index-headers.html | 2019-05-13 16:17:18 | |
| 0001047469-19-003058-index.html | 2019-05-13 16:17:18 | |
| 0001047469-19-003058.txt | 2019-05-13 16:17:18 | |
 0001047469-19-003058-xbrl.zip | 151615 | 2019-05-13 16:17:18 |
| a2238440z10-q.htm | 897247 | 2019-05-13 16:17:18 |
| 136788 | 2019-05-13 16:17:18 | |
| a2238440zex-31_1.htm | 8352 | 2019-05-13 16:17:18 |
| a2238440zex-31_2.htm | 8387 | 2019-05-13 16:17:18 |
| a2238440zex-32_1.htm | 5500 | 2019-05-13 16:17:18 |
| a2238440zex-32_2.htm | 4886 | 2019-05-13 16:17:18 |
| a2238440zex-99_1.htm | 3515951 | 2019-05-13 16:17:18 |
| FilingSummary.xml | 25685 | 2019-05-13 16:17:18 |
| Financial_Report.xlsx | 63105 | 2019-05-13 16:17:18 |
 g360894.jpg | 10716 | 2019-05-13 16:17:18 |
| opc-20190331.xml | 2030203 | 2019-05-13 16:17:18 |
| opc-20190331.xsd | 63985 | 2019-05-13 16:17:18 |
| opc-20190331_cal.xml | 80353 | 2019-05-13 16:17:18 |
| opc-20190331_def.xml | 144571 | 2019-05-13 16:17:18 |
| opc-20190331_lab.xml | 515758 | 2019-05-13 16:17:18 |
| opc-20190331_pre.xml | 322927 | 2019-05-13 16:17:18 |
| R1.htm | 25219 | 2019-05-13 16:17:18 |
| R10.htm | 8462 | 2019-05-13 16:17:18 |
| R11.htm | 34314 | 2019-05-13 16:17:18 |
| R12.htm | 198653 | 2019-05-13 16:17:18 |
| R13.htm | 8236 | 2019-05-13 16:17:18 |
| R14.htm | 5544 | 2019-05-13 16:17:18 |
| R15.htm | 93762 | 2019-05-13 16:17:18 |
| R16.htm | 5108 | 2019-05-13 16:17:18 |
| R17.htm | 18445 | 2019-05-13 16:17:18 |
| R18.htm | 13602 | 2019-05-13 16:17:18 |
| R19.htm | 317823 | 2019-05-13 16:17:18 |
| R2.htm | 102419 | 2019-05-13 16:17:18 |
| R20.htm | 114891 | 2019-05-13 16:17:18 |
| R21.htm | 76845 | 2019-05-13 16:17:18 |
| R22.htm | 21505 | 2019-05-13 16:17:18 |
| R23.htm | 200257 | 2019-05-13 16:17:18 |
| R24.htm | 92951 | 2019-05-13 16:17:18 |
| R25.htm | 4098 | 2019-05-13 16:17:18 |
| R26.htm | 65837 | 2019-05-13 16:17:18 |
| R27.htm | 10489 | 2019-05-13 16:17:18 |
| R28.htm | 9269 | 2019-05-13 16:17:18 |
| R29.htm | 22932 | 2019-05-13 16:17:18 |
| R3.htm | 44828 | 2019-05-13 16:17:18 |
| R30.htm | 15626 | 2019-05-13 16:17:18 |
| R31.htm | 15640 | 2019-05-13 16:17:18 |
| R32.htm | 40793 | 2019-05-13 16:17:18 |
| R33.htm | 20842 | 2019-05-13 16:17:18 |
| R34.htm | 10622 | 2019-05-13 16:17:18 |
| R35.htm | 30243 | 2019-05-13 16:17:18 |
| R36.htm | 33093 | 2019-05-13 16:17:18 |
| R37.htm | 24657 | 2019-05-13 16:17:18 |
| R38.htm | 67205 | 2019-05-13 16:17:18 |
| R39.htm | 8715 | 2019-05-13 16:17:18 |
| R4.htm | 10374 | 2019-05-13 16:17:18 |
| R40.htm | 67130 | 2019-05-13 16:17:18 |
| R41.htm | 40671 | 2019-05-13 16:17:18 |
| R42.htm | 8118 | 2019-05-13 16:17:18 |
| R43.htm | 31580 | 2019-05-13 16:17:18 |
| R5.htm | 94896 | 2019-05-13 16:17:18 |
| R6.htm | 7345 | 2019-05-13 16:17:18 |
| R7.htm | 324893 | 2019-05-13 16:17:18 |
| R8.htm | 113989 | 2019-05-13 16:17:18 |
| R9.htm | 79320 | 2019-05-13 16:17:18 |
| report.css | 2767 | 2019-05-13 16:17:18 |
| Show.js | 1085 | 2019-05-13 16:17:18 |