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| 0001437749-19-016060-index.html | 2019-08-08 16:33:12 | |
| 0001437749-19-016060.txt | 2019-08-08 16:33:12 | |
 0001437749-19-016060-xbrl.zip | 143107 | 2019-08-08 16:33:12 |
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| ex_152617.htm | 15021 | 2019-08-08 16:33:12 |
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| ex_152619.htm | 9817 | 2019-08-08 16:33:12 |
| FilingSummary.xml | 39301 | 2019-08-08 16:33:12 |
| Financial_Report.xlsx | 69534 | 2019-08-08 16:33:12 |
| nrc-20190630.xml | 1352746 | 2019-08-08 16:33:12 |
| nrc-20190630.xsd | 60937 | 2019-08-08 16:33:12 |
| nrc-20190630_cal.xml | 56901 | 2019-08-08 16:33:12 |
| nrc-20190630_def.xml | 414658 | 2019-08-08 16:33:12 |
| nrc-20190630_lab.xml | 385491 | 2019-08-08 16:33:12 |
| nrc-20190630_pre.xml | 449671 | 2019-08-08 16:33:12 |
| nrc20190630_10q.htm | 1098658 | 2019-08-08 16:33:12 |
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| report.css | 2767 | 2019-08-08 16:33:12 |
| Show.js | 1085 | 2019-08-08 16:33:12 |