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|---|---|---|
 0000225648-20-000183-index-headers.html | 2020-10-30 16:16:40 | |
| 0000225648-20-000183-index.html | 2020-10-30 16:16:40 | |
| 0000225648-20-000183.txt | 2020-10-30 16:16:40 | |
 0000225648-20-000183-xbrl.zip | 49016 | 2020-10-30 16:16:40 |
| cva-20201029.htm | 46574 | 2020-10-30 16:16:40 |
| cva-20201029.xsd | 2714 | 2020-10-30 16:16:40 |
| cva-20201029_cal.xml | 757 | 2020-10-30 16:16:40 |
| cva-20201029_def.xml | 1698 | 2020-10-30 16:16:40 |
| cva-20201029_htm.xml | 9553 | 2020-10-30 16:16:40 |
| cva-20201029_lab.xml | 21788 | 2020-10-30 16:16:40 |
| cva-20201029_pre.xml | 11191 | 2020-10-30 16:16:40 |
 cvalogo2a151a.jpg | 233487 | 2020-10-30 16:16:40 |
| exhibit991q320.htm | 541815 | 2020-10-30 16:16:40 |
| exhibit992q320.htm | 46493 | 2020-10-30 16:16:40 |
 exhibit992q320001.jpg | 166340 | 2020-10-30 16:16:40 |
 exhibit992q320002.jpg | 378266 | 2020-10-30 16:16:40 |
 exhibit992q320003.jpg | 127309 | 2020-10-30 16:16:40 |
 exhibit992q320004.jpg | 79040 | 2020-10-30 16:16:40 |
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 exhibit992q320009.jpg | 38355 | 2020-10-30 16:16:40 |
 exhibit992q320010.jpg | 155430 | 2020-10-30 16:16:40 |
 exhibit992q320011.jpg | 166248 | 2020-10-30 16:16:40 |
 exhibit992q320012.jpg | 148038 | 2020-10-30 16:16:40 |
 exhibit992q320013.jpg | 147580 | 2020-10-30 16:16:40 |
 exhibit992q320014.jpg | 158737 | 2020-10-30 16:16:40 |
 exhibit992q320015.jpg | 152130 | 2020-10-30 16:16:40 |
 exhibit992q320016.jpg | 146216 | 2020-10-30 16:16:40 |
 exhibit992q320017.jpg | 223348 | 2020-10-30 16:16:40 |
| FilingSummary.xml | 1781 | 2020-10-30 16:16:40 |
| Financial_Report.xlsx | 5340 | 2020-10-30 16:16:40 |
| MetaLinks.json | 15918 | 2020-10-30 16:16:40 |
| R1.htm | 33839 | 2020-10-30 16:16:40 |
| report.css | 2767 | 2020-10-30 16:16:40 |
| Show.js | 1085 | 2020-10-30 16:16:40 |