Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-20-022940-index-headers.html | 2020-11-06 12:11:19 | |
| 0001437749-20-022940-index.html | 2020-11-06 12:11:19 | |
| 0001437749-20-022940.txt | 2020-11-06 12:11:19 | |
 0001437749-20-022940-xbrl.zip | 186638 | 2020-11-06 12:11:19 |
| ex_209219.htm | 13963 | 2020-11-06 12:11:19 |
 ex_209219img002.gif | 7307 | 2020-11-06 12:11:19 |
| ex_209220.htm | 13960 | 2020-11-06 12:11:19 |
| ex_209221.htm | 9332 | 2020-11-06 12:11:19 |
| FilingSummary.xml | 34259 | 2020-11-06 12:11:19 |
| Financial_Report.xlsx | 65747 | 2020-11-06 12:11:19 |
| MetaLinks.json | 577008 | 2020-11-06 12:11:19 |
| nrc-20200930.xsd | 51790 | 2020-11-06 12:11:19 |
| nrc-20200930_cal.xml | 45060 | 2020-11-06 12:11:19 |
| nrc-20200930_def.xml | 379550 | 2020-11-06 12:11:19 |
| nrc-20200930_lab.xml | 343887 | 2020-11-06 12:11:19 |
| nrc-20200930_pre.xml | 404912 | 2020-11-06 12:11:19 |
| nrc20200930_10q.htm | 1184384 | 2020-11-06 12:11:19 |
| nrc20200930_10q_htm.xml | 954348 | 2020-11-06 12:11:19 |
| R1.htm | 52466 | 2020-11-06 12:11:19 |
| R10.htm | 52658 | 2020-11-06 12:11:19 |
| R11.htm | 9085 | 2020-11-06 12:11:19 |
| R12.htm | 19293 | 2020-11-06 12:11:19 |
| R13.htm | 50249 | 2020-11-06 12:11:19 |
| R14.htm | 23992 | 2020-11-06 12:11:19 |
| R15.htm | 12867 | 2020-11-06 12:11:19 |
| R16.htm | 46737 | 2020-11-06 12:11:19 |
| R17.htm | 9817 | 2020-11-06 12:11:19 |
| R18.htm | 23504 | 2020-11-06 12:11:19 |
| R19.htm | 102915 | 2020-11-06 12:11:19 |
| R2.htm | 99374 | 2020-11-06 12:11:19 |
| R20.htm | 53203 | 2020-11-06 12:11:19 |
| R21.htm | 47498 | 2020-11-06 12:11:19 |
| R22.htm | 12256 | 2020-11-06 12:11:19 |
| R23.htm | 43323 | 2020-11-06 12:11:19 |
| R24.htm | 24139 | 2020-11-06 12:11:19 |
| R25.htm | 11430 | 2020-11-06 12:11:19 |
| R26.htm | 43344 | 2020-11-06 12:11:19 |
| R27.htm | 18240 | 2020-11-06 12:11:19 |
| R28.htm | 54788 | 2020-11-06 12:11:19 |
| R29.htm | 7007 | 2020-11-06 12:11:19 |
| R3.htm | 20398 | 2020-11-06 12:11:19 |
| R30.htm | 10246 | 2020-11-06 12:11:19 |
| R31.htm | 13551 | 2020-11-06 12:11:19 |
| R32.htm | 7855 | 2020-11-06 12:11:19 |
| R33.htm | 10030 | 2020-11-06 12:11:19 |
| R34.htm | 15847 | 2020-11-06 12:11:19 |
| R35.htm | 21444 | 2020-11-06 12:11:19 |
| R36.htm | 5136 | 2020-11-06 12:11:19 |
| R37.htm | 41087 | 2020-11-06 12:11:19 |
| R38.htm | 12125 | 2020-11-06 12:11:19 |
| R39.htm | 67263 | 2020-11-06 12:11:19 |
| R4.htm | 69617 | 2020-11-06 12:11:19 |
| R40.htm | 11429 | 2020-11-06 12:11:19 |
| R41.htm | 45013 | 2020-11-06 12:11:19 |
| R42.htm | 16326 | 2020-11-06 12:11:19 |
| R43.htm | 5864 | 2020-11-06 12:11:19 |
| R44.htm | 16123 | 2020-11-06 12:11:19 |
| R45.htm | 8876 | 2020-11-06 12:11:19 |
| R46.htm | 5249 | 2020-11-06 12:11:19 |
| R47.htm | 39491 | 2020-11-06 12:11:19 |
| R48.htm | 12556 | 2020-11-06 12:11:19 |
| R49.htm | 5413 | 2020-11-06 12:11:19 |
| R5.htm | 20547 | 2020-11-06 12:11:19 |
| R50.htm | 11309 | 2020-11-06 12:11:19 |
| R6.htm | 50933 | 2020-11-06 12:11:19 |
| R7.htm | 15660 | 2020-11-06 12:11:19 |
| R8.htm | 95997 | 2020-11-06 12:11:19 |
| R9.htm | 93223 | 2020-11-06 12:11:19 |
| report.css | 2767 | 2020-11-06 12:11:19 |
 rev01.jpg | 13220 | 2020-11-06 12:11:19 |
 rev02a.jpg | 15676 | 2020-11-06 12:11:19 |
 rev2b.jpg | 10969 | 2020-11-06 12:11:19 |
| Show.js | 1085 | 2020-11-06 12:11:19 |