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| 0001564590-18-004771-index.html | 2018-03-07 18:03:42 | |
| 0001564590-18-004771.txt | 2018-03-07 18:03:42 | |
 0001564590-18-004771-xbrl.zip | 194006 | 2018-03-07 18:03:42 |
| crr-10k_20171231.htm | 3043884 | 2018-03-07 18:03:42 |
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| Financial_Report.xlsx | 95837 | 2018-03-07 18:03:42 |
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| report.css | 2767 | 2018-03-07 18:03:42 |
| Show.js | 1410 | 2018-03-07 18:03:42 |