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| cern-20220331.htm | 1249044 | 2022-05-03 09:07:58 |
| cern-20220331.xsd | 34692 | 2022-05-03 09:07:58 |
| cern-20220331_cal.xml | 54769 | 2022-05-03 09:07:58 |
| cern-20220331_def.xml | 217412 | 2022-05-03 09:07:58 |
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| cern-20220331_htm.xml | 1182090 | 2022-05-03 09:07:58 |
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| cern-20220331_pre.xml | 307607 | 2022-05-03 09:07:58 |
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| ex104form2022executiveperf.htm | 45609 | 2022-05-03 09:07:58 |
| ex105formamendmenttoexecut.htm | 13434 | 2022-05-03 09:07:58 |
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| ex321-ceosec906cert1q2022.htm | 4831 | 2022-05-03 09:07:58 |
| ex322-cfosec906cert1q2022.htm | 4870 | 2022-05-03 09:07:58 |
| FilingSummary.xml | 33503 | 2022-05-03 09:07:58 |
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