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|---|---|---|
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| 0000858470-25-000111-index.html | 2025-05-06 17:24:06 | |
| 0000858470-25-000111.txt | 2025-05-06 17:24:06 | |
 0000858470-25-000111-xbrl.zip | 251526 | 2025-05-06 17:24:06 |
| ctra-03312025ex10_4a.htm | 39784 | 2025-05-06 17:24:06 |
| ctra-03312025ex10_4b.htm | 61988 | 2025-05-06 17:24:06 |
| ctra-03312025ex31_1.htm | 9150 | 2025-05-06 17:24:06 |
| ctra-03312025ex31_2.htm | 9182 | 2025-05-06 17:24:06 |
| ctra-03312025ex32_1.htm | 6237 | 2025-05-06 17:24:06 |
| ctra-20250331.htm | 1671500 | 2025-05-06 17:24:06 |
| ctra-20250331.xsd | 50362 | 2025-05-06 17:24:06 |
| ctra-20250331_cal.xml | 102254 | 2025-05-06 17:24:06 |
| ctra-20250331_def.xml | 219200 | 2025-05-06 17:24:06 |
| ctra-20250331_htm.xml | 1454659 | 2025-05-06 17:24:06 |
| ctra-20250331_lab.xml | 676489 | 2025-05-06 17:24:06 |
| ctra-20250331_pre.xml | 463156 | 2025-05-06 17:24:06 |
| FilingSummary.xml | 42334 | 2025-05-06 17:24:06 |
| Financial_Report.xlsx | 91941 | 2025-05-06 17:24:06 |
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| R1.htm | 54667 | 2025-05-06 17:24:06 |
| R10.htm | 17428 | 2025-05-06 17:24:06 |
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| R9.htm | 56140 | 2025-05-06 17:24:06 |
| report.css | 2767 | 2025-05-06 17:24:06 |
| Show.js | 1085 | 2025-05-06 17:24:06 |