Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-163494-index-headers.html | 2020-06-08 16:17:18 | |
| 0001193125-20-163494-index.html | 2020-06-08 16:17:18 | |
| 0001193125-20-163494.txt | 2020-06-08 16:17:18 | |
 0001193125-20-163494-xbrl.zip | 8861 | 2020-06-08 16:17:18 |
| cers-20200603.xsd | 3060 | 2020-06-08 16:17:18 |
| cers-20200603_lab.xml | 18138 | 2020-06-08 16:17:18 |
| cers-20200603_pre.xml | 11401 | 2020-06-08 16:17:18 |
| d939854d8k.htm | 40364 | 2020-06-08 16:17:18 |
| d939854d8k_htm.xml | 3421 | 2020-06-08 16:17:18 |
| FilingSummary.xml | 1689 | 2020-06-08 16:17:18 |
| Financial_Report.xlsx | 5815 | 2020-06-08 16:17:18 |
| MetaLinks.json | 18761 | 2020-06-08 16:17:18 |
| R1.htm | 40181 | 2020-06-08 16:17:18 |
| report.css | 2766 | 2020-06-08 16:17:18 |
| Show.js | 1085 | 2020-06-08 16:17:18 |