Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-22-140749-index-headers.html | 2022-05-04 17:48:25 | |
| 0001193125-22-140749-index.html | 2022-05-04 17:48:25 | |
| 0001193125-22-140749.txt | 2022-05-04 17:48:25 | |
 0001193125-22-140749-xbrl.zip | 8331 | 2022-05-04 17:48:25 |
| cers-20220502.xsd | 2850 | 2022-05-04 17:48:25 |
| cers-20220502_lab.xml | 17994 | 2022-05-04 17:48:25 |
| cers-20220502_pre.xml | 11257 | 2022-05-04 17:48:25 |
| d306243d8k.htm | 23970 | 2022-05-04 17:48:25 |
| d306243d8k_htm.xml | 3384 | 2022-05-04 17:48:25 |
| FilingSummary.xml | 1694 | 2022-05-04 17:48:25 |
| Financial_Report.xlsx | 5687 | 2022-05-04 17:48:25 |
| MetaLinks.json | 18243 | 2022-05-04 17:48:25 |
| R1.htm | 40252 | 2022-05-04 17:48:25 |
| report.css | 2766 | 2022-05-04 17:48:25 |
| Show.js | 1084 | 2022-05-04 17:48:25 |