Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001654954-17-002641-index-headers.html | 2017-03-28 16:04:00 | |
| 0001654954-17-002641-index.html | 2017-03-28 16:04:00 | |
| 0001654954-17-002641.txt | 2017-03-28 16:04:00 | |
 0001654954-17-002641-xbrl.zip | 74699 | 2017-03-28 16:04:00 |
| FilingSummary.xml | 20853 | 2017-03-28 16:04:00 |
| Financial_Report.xlsx | 49409 | 2017-03-28 16:04:00 |
| opxa-20161231.xml | 318568 | 2017-03-28 16:04:00 |
| opxa-20161231.xsd | 42167 | 2017-03-28 16:04:00 |
| opxa-20161231_cal.xml | 41273 | 2017-03-28 16:04:00 |
| opxa-20161231_def.xml | 56113 | 2017-03-28 16:04:00 |
| opxa-20161231_lab.xml | 255061 | 2017-03-28 16:04:00 |
| opxa-20161231_pre.xml | 165351 | 2017-03-28 16:04:00 |
| opxa_10k.htm | 1199205 | 2017-03-28 16:04:00 |
 opxa_10k000.jpg | 1517 | 2017-03-28 16:04:00 |
| opxa_ex231.htm | 3529 | 2017-03-28 16:04:00 |
| opxa_ex311.htm | 12949 | 2017-03-28 16:04:00 |
| opxa_ex312.htm | 12921 | 2017-03-28 16:04:00 |
| opxa_ex321.htm | 7794 | 2017-03-28 16:04:00 |
| opxa_ex322.htm | 7834 | 2017-03-28 16:04:00 |
| R1.htm | 28422 | 2017-03-28 16:04:00 |
| R10.htm | 17797 | 2017-03-28 16:04:00 |
| R11.htm | 4942 | 2017-03-28 16:04:00 |
| R12.htm | 5694 | 2017-03-28 16:04:00 |
| R13.htm | 12974 | 2017-03-28 16:04:00 |
| R14.htm | 9136 | 2017-03-28 16:04:00 |
| R15.htm | 8072 | 2017-03-28 16:04:00 |
| R16.htm | 23914 | 2017-03-28 16:04:00 |
| R17.htm | 43251 | 2017-03-28 16:04:00 |
| R18.htm | 5563 | 2017-03-28 16:04:00 |
| R19.htm | 6826 | 2017-03-28 16:04:00 |
| R2.htm | 50278 | 2017-03-28 16:04:00 |
| R20.htm | 71996 | 2017-03-28 16:04:00 |
| R21.htm | 6822 | 2017-03-28 16:04:00 |
| R22.htm | 15127 | 2017-03-28 16:04:00 |
| R23.htm | 9165 | 2017-03-28 16:04:00 |
| R24.htm | 6775 | 2017-03-28 16:04:00 |
| R25.htm | 32611 | 2017-03-28 16:04:00 |
| R26.htm | 9113 | 2017-03-28 16:04:00 |
| R27.htm | 9416 | 2017-03-28 16:04:00 |
| R28.htm | 29909 | 2017-03-28 16:04:00 |
| R29.htm | 4981 | 2017-03-28 16:04:00 |
| R3.htm | 21339 | 2017-03-28 16:04:00 |
| R30.htm | 15067 | 2017-03-28 16:04:00 |
| R31.htm | 7002 | 2017-03-28 16:04:00 |
| R32.htm | 14425 | 2017-03-28 16:04:00 |
| R33.htm | 4499 | 2017-03-28 16:04:00 |
| R34.htm | 42685 | 2017-03-28 16:04:00 |
| R35.htm | 37001 | 2017-03-28 16:04:00 |
| R4.htm | 29391 | 2017-03-28 16:04:00 |
| R5.htm | 36419 | 2017-03-28 16:04:00 |
| R6.htm | 66573 | 2017-03-28 16:04:00 |
| R7.htm | 30055 | 2017-03-28 16:04:00 |
| R8.htm | 6358 | 2017-03-28 16:04:00 |
| R9.htm | 8756 | 2017-03-28 16:04:00 |
| report.css | 2767 | 2017-03-28 16:04:00 |
| Show.js | 1410 | 2017-03-28 16:04:00 |