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| 0001564590-20-004703-index.html | 2020-02-14 08:32:03 | |
| 0001564590-20-004703.txt | 2020-02-14 08:32:03 | |
 0001564590-20-004703-xbrl.zip | 131995 | 2020-02-14 08:32:03 |
| FilingSummary.xml | 36659 | 2020-02-14 08:32:03 |
| Financial_Report.xlsx | 66261 | 2020-02-14 08:32:03 |
| nick-10q_20191231.htm | 2291505 | 2020-02-14 08:32:03 |
| nick-20191231.xml | 2148940 | 2020-02-14 08:32:03 |
| nick-20191231.xsd | 51590 | 2020-02-14 08:32:03 |
| nick-20191231_cal.xml | 59106 | 2020-02-14 08:32:03 |
| nick-20191231_def.xml | 159101 | 2020-02-14 08:32:03 |
| nick-20191231_lab.xml | 356118 | 2020-02-14 08:32:03 |
| nick-20191231_pre.xml | 292443 | 2020-02-14 08:32:03 |
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| nick-ex312_6.htm | 18371 | 2020-02-14 08:32:03 |
| nick-ex321_8.htm | 3657 | 2020-02-14 08:32:03 |
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| report.css | 2767 | 2020-02-14 08:32:03 |
| Show.js | 1085 | 2020-02-14 08:32:03 |