Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001654954-17-004492-index-headers.html | 2017-05-12 08:32:10 | |
| 0001654954-17-004492-index.html | 2017-05-12 08:32:10 | |
| 0001654954-17-004492.txt | 2017-05-12 08:32:10 | |
 0001654954-17-004492-xbrl.zip | 35777 | 2017-05-12 08:32:10 |
| exhibit311.htm | 13158 | 2017-05-12 08:32:10 |
| exhibit321.htm | 7497 | 2017-05-12 08:32:10 |
| FilingSummary.xml | 16103 | 2017-05-12 08:32:10 |
| Financial_Report.xlsx | 27015 | 2017-05-12 08:32:10 |
| opxa-20170331.xml | 107820 | 2017-05-12 08:32:10 |
| opxa-20170331.xsd | 28313 | 2017-05-12 08:32:10 |
| opxa-20170331_cal.xml | 29188 | 2017-05-12 08:32:10 |
| opxa-20170331_def.xml | 40120 | 2017-05-12 08:32:10 |
| opxa-20170331_lab.xml | 150345 | 2017-05-12 08:32:10 |
| opxa-20170331_pre.xml | 110644 | 2017-05-12 08:32:10 |
| opxa_10q.htm | 563242 | 2017-05-12 08:32:10 |
 opxa_10q000.jpg | 1738 | 2017-05-12 08:32:10 |
| R1.htm | 25801 | 2017-05-12 08:32:10 |
| R10.htm | 5807 | 2017-05-12 08:32:10 |
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| R2.htm | 44355 | 2017-05-12 08:32:10 |
| R20.htm | 8973 | 2017-05-12 08:32:10 |
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| R22.htm | 36408 | 2017-05-12 08:32:10 |
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| R24.htm | 6150 | 2017-05-12 08:32:10 |
| R3.htm | 21330 | 2017-05-12 08:32:10 |
| R4.htm | 24927 | 2017-05-12 08:32:10 |
| R5.htm | 21430 | 2017-05-12 08:32:10 |
| R6.htm | 55872 | 2017-05-12 08:32:10 |
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| R8.htm | 7686 | 2017-05-12 08:32:10 |
| R9.htm | 9546 | 2017-05-12 08:32:10 |
| report.css | 2767 | 2017-05-12 08:32:10 |
| Show.js | 1410 | 2017-05-12 08:32:10 |