Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-133699-index-headers.html | 2020-05-05 16:04:10 | |
| 0001193125-20-133699-index.html | 2020-05-05 16:04:10 | |
| 0001193125-20-133699.txt | 2020-05-05 16:04:10 | |
 0001193125-20-133699-xbrl.zip | 17389 | 2020-05-05 16:04:10 |
| cers-20200505.xsd | 3060 | 2020-05-05 16:04:10 |
| cers-20200505_lab.xml | 18138 | 2020-05-05 16:04:10 |
| cers-20200505_pre.xml | 11401 | 2020-05-05 16:04:10 |
| d927626d8k.htm | 27990 | 2020-05-05 16:04:10 |
| d927626d8k_htm.xml | 3380 | 2020-05-05 16:04:10 |
| d927626dex991.htm | 76661 | 2020-05-05 16:04:10 |
| FilingSummary.xml | 1724 | 2020-05-05 16:04:10 |
| Financial_Report.xlsx | 5795 | 2020-05-05 16:04:10 |
 g927626img011.jpg | 6796 | 2020-05-05 16:04:10 |
| MetaLinks.json | 18731 | 2020-05-05 16:04:10 |
| R1.htm | 40138 | 2020-05-05 16:04:10 |
| report.css | 2766 | 2020-05-05 16:04:10 |
| Show.js | 1085 | 2020-05-05 16:04:10 |