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| 0001193125-12-096720-index.html | 2012-03-05 16:05:50 | |
| 0001193125-12-096720.txt | 2012-03-05 16:05:50 | |
 0001193125-12-096720-xbrl.zip | 76889 | 2012-03-05 16:05:50 |
| cers-20111231.xml | 736889 | 2012-03-05 16:05:50 |
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| FilingSummary.xml | 13476 | 2012-03-05 16:05:50 |
| Financial_Report.xls | 605785 | 2012-03-05 16:05:50 |
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| R11.htm | 57854 | 2012-03-05 16:05:50 |
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| R9.htm | 67769 | 2012-03-05 16:05:50 |
| report.css | 2721 | 2012-03-05 16:05:50 |
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