Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-016944-index-headers.html | 2020-01-28 16:12:10 | |
| 0001193125-20-016944-index.html | 2020-01-28 16:12:10 | |
| 0001193125-20-016944.txt | 2020-01-28 16:12:10 | |
 0001193125-20-016944-xbrl.zip | 14255 | 2020-01-28 16:12:10 |
| cers-20200113.xsd | 3061 | 2020-01-28 16:12:10 |
| cers-20200113_lab.xml | 18139 | 2020-01-28 16:12:10 |
| cers-20200113_pre.xml | 11402 | 2020-01-28 16:12:10 |
| d851274d8k.htm | 31930 | 2020-01-28 16:12:10 |
| d851274d8k_htm.xml | 3383 | 2020-01-28 16:12:10 |
| d851274dex991.htm | 16273 | 2020-01-28 16:12:10 |
| FilingSummary.xml | 1729 | 2020-01-28 16:12:10 |
| Financial_Report.xlsx | 5797 | 2020-01-28 16:12:10 |
 g851274img01.jpg | 6405 | 2020-01-28 16:12:10 |
| MetaLinks.json | 18731 | 2020-01-28 16:12:10 |
| R1.htm | 40148 | 2020-01-28 16:12:10 |
| report.css | 2766 | 2020-01-28 16:12:10 |
| Show.js | 1085 | 2020-01-28 16:12:10 |