Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-21-124227-index-headers.html | 2021-10-07 17:04:04 | |
| 0001104659-21-124227-index.html | 2021-10-07 17:04:04 | |
| 0001104659-21-124227.txt | 2021-10-07 17:04:04 | |
 0001104659-21-124227-xbrl.zip | 180231 | 2021-10-07 17:04:04 |
| ctra-20211007.xsd | 3186 | 2021-10-07 17:04:04 |
| ctra-20211007_lab.xml | 34594 | 2021-10-07 17:04:04 |
| ctra-20211007_pre.xml | 22711 | 2021-10-07 17:04:04 |
| FilingSummary.xml | 1716 | 2021-10-07 17:04:04 |
| Financial_Report.xlsx | 5712 | 2021-10-07 17:04:04 |
| MetaLinks.json | 38381 | 2021-10-07 17:04:04 |
| R1.htm | 41696 | 2021-10-07 17:04:04 |
| report.css | 2767 | 2021-10-07 17:04:04 |
| Show.js | 1085 | 2021-10-07 17:04:04 |
| tm2129413d1_8k.htm | 45550 | 2021-10-07 17:04:04 |
| tm2129413d1_8k_htm.xml | 3731 | 2021-10-07 17:04:04 |
| tm2129413d1_ex4-1.htm | 585686 | 2021-10-07 17:04:04 |
| tm2129413d1_ex4-2.htm | 523152 | 2021-10-07 17:04:04 |
| tm2129413d1_ex4-6.htm | 163410 | 2021-10-07 17:04:04 |