Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001193125-12-212759-index.html | 2012-05-04 21:11:23 | |
| 0001193125-12-212759.txt | 2012-05-04 21:11:23 | |
 0001193125-12-212759-xbrl.zip | 47880 | 2012-05-04 21:11:23 |
| cers-20120331.xml | 347019 | 2012-05-04 21:11:23 |
| cers-20120331.xsd | 11263 | 2012-05-04 21:11:23 |
| cers-20120331_cal.xml | 35062 | 2012-05-04 21:11:23 |
| cers-20120331_lab.xml | 116719 | 2012-05-04 21:11:23 |
| cers-20120331_pre.xml | 76170 | 2012-05-04 21:11:23 |
| d324845d10q.htm | 667326 | 2012-05-04 21:11:23 |
| d324845dex105.htm | 51614 | 2012-05-04 21:11:23 |
| d324845dex106.htm | 23981 | 2012-05-04 21:11:23 |
| d324845dex107.htm | 26192 | 2012-05-04 21:11:23 |
| d324845dex108.htm | 42732 | 2012-05-04 21:11:23 |
| d324845dex311.htm | 9649 | 2012-05-04 21:11:23 |
| d324845dex312.htm | 9679 | 2012-05-04 21:11:23 |
| d324845dex321.htm | 3829 | 2012-05-04 21:11:23 |
| FilingSummary.xml | 10227 | 2012-05-04 21:11:23 |
| Financial_Report.xls | 311013 | 2012-05-04 21:11:23 |
| R1.htm | 26708 | 2012-05-04 21:11:23 |
| R10.htm | 12915 | 2012-05-04 21:11:23 |
| R11.htm | 25636 | 2012-05-04 21:11:23 |
| R12.htm | 7758 | 2012-05-04 21:11:23 |
| R13.htm | 12973 | 2012-05-04 21:11:23 |
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| R16.htm | 39885 | 2012-05-04 21:11:23 |
| R17.htm | 27239 | 2012-05-04 21:11:23 |
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| R19.htm | 17784 | 2012-05-04 21:11:23 |
| R2.htm | 125818 | 2012-05-04 21:11:23 |
| R3.htm | 6047 | 2012-05-04 21:11:23 |
| R4.htm | 86904 | 2012-05-04 21:11:23 |
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| R7.htm | 60392 | 2012-05-04 21:11:23 |
| R8.htm | 53416 | 2012-05-04 21:11:23 |
| R9.htm | 48489 | 2012-05-04 21:11:23 |
| report.css | 2721 | 2012-05-04 21:11:23 |
| Show.js | 6423 | 2012-05-04 21:11:23 |