Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-22-048529-index-headers.html | 2022-02-22 16:08:12 | |
| 0001193125-22-048529-index.html | 2022-02-22 16:08:12 | |
| 0001193125-22-048529.txt | 2022-02-22 16:08:12 | |
 0001193125-22-048529-xbrl.zip | 19353 | 2022-02-22 16:08:12 |
| cers-20220222.xsd | 2851 | 2022-02-22 16:08:12 |
| cers-20220222_lab.xml | 17995 | 2022-02-22 16:08:12 |
| cers-20220222_pre.xml | 11258 | 2022-02-22 16:08:12 |
| d317573d8k.htm | 26576 | 2022-02-22 16:08:12 |
| d317573d8k_htm.xml | 3384 | 2022-02-22 16:08:12 |
| d317573dex991.htm | 116464 | 2022-02-22 16:08:12 |
| FilingSummary.xml | 1732 | 2022-02-22 16:08:12 |
| Financial_Report.xlsx | 5685 | 2022-02-22 16:08:12 |
 g317573g0218201929182.jpg | 2395 | 2022-02-22 16:08:12 |
| MetaLinks.json | 18274 | 2022-02-22 16:08:12 |
| R1.htm | 40117 | 2022-02-22 16:08:12 |
| report.css | 2767 | 2022-02-22 16:08:12 |
| Show.js | 1085 | 2022-02-22 16:08:12 |