Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-21-025381-index-headers.html | 2021-11-05 06:04:09 | |
| 0001437749-21-025381-index.html | 2021-11-05 06:04:09 | |
| 0001437749-21-025381.txt | 2021-11-05 06:04:09 | |
 0001437749-21-025381-xbrl.zip | 156807 | 2021-11-05 06:04:09 |
| ex_298057.htm | 11505 | 2021-11-05 06:04:09 |
| ex_298058.htm | 11258 | 2021-11-05 06:04:09 |
| ex_298059.htm | 4605 | 2021-11-05 06:04:09 |
| ex_298060.htm | 5368 | 2021-11-05 06:04:09 |
| FilingSummary.xml | 49956 | 2021-11-05 06:04:09 |
| Financial_Report.xlsx | 83203 | 2021-11-05 06:04:09 |
| MetaLinks.json | 627031 | 2021-11-05 06:04:09 |
| nath-20210926.xsd | 71043 | 2021-11-05 06:04:09 |
| nath-20210926_cal.xml | 53409 | 2021-11-05 06:04:09 |
| nath-20210926_def.xml | 404985 | 2021-11-05 06:04:09 |
| nath-20210926_lab.xml | 342292 | 2021-11-05 06:04:09 |
| nath-20210926_pre.xml | 449550 | 2021-11-05 06:04:09 |
| nath20210926_10q.htm | 1208251 | 2021-11-05 06:04:09 |
| nath20210926_10q_htm.xml | 1151961 | 2021-11-05 06:04:09 |
| R1.htm | 52454 | 2021-11-05 06:04:09 |
| R10.htm | 73235 | 2021-11-05 06:04:09 |
| R11.htm | 59873 | 2021-11-05 06:04:09 |
| R12.htm | 6279 | 2021-11-05 06:04:09 |
| R13.htm | 16630 | 2021-11-05 06:04:09 |
| R14.htm | 24794 | 2021-11-05 06:04:09 |
| R15.htm | 14572 | 2021-11-05 06:04:09 |
| R16.htm | 6882 | 2021-11-05 06:04:09 |
| R17.htm | 7502 | 2021-11-05 06:04:09 |
| R18.htm | 27322 | 2021-11-05 06:04:09 |
| R19.htm | 8936 | 2021-11-05 06:04:09 |
| R2.htm | 104930 | 2021-11-05 06:04:09 |
| R20.htm | 53171 | 2021-11-05 06:04:09 |
| R21.htm | 61561 | 2021-11-05 06:04:09 |
| R22.htm | 17260 | 2021-11-05 06:04:09 |
| R23.htm | 36508 | 2021-11-05 06:04:09 |
| R24.htm | 60141 | 2021-11-05 06:04:09 |
| R25.htm | 8414 | 2021-11-05 06:04:09 |
| R26.htm | 5423 | 2021-11-05 06:04:09 |
| R27.htm | 71946 | 2021-11-05 06:04:09 |
| R28.htm | 56455 | 2021-11-05 06:04:09 |
| R29.htm | 11535 | 2021-11-05 06:04:09 |
| R3.htm | 16195 | 2021-11-05 06:04:09 |
| R30.htm | 24119 | 2021-11-05 06:04:09 |
| R31.htm | 13937 | 2021-11-05 06:04:09 |
| R32.htm | 27618 | 2021-11-05 06:04:09 |
| R33.htm | 44240 | 2021-11-05 06:04:09 |
| R34.htm | 63564 | 2021-11-05 06:04:09 |
| R35.htm | 16484 | 2021-11-05 06:04:09 |
| R36.htm | 61171 | 2021-11-05 06:04:09 |
| R37.htm | 8454 | 2021-11-05 06:04:09 |
| R38.htm | 13793 | 2021-11-05 06:04:09 |
| R39.htm | 20711 | 2021-11-05 06:04:09 |
| R4.htm | 84596 | 2021-11-05 06:04:09 |
| R40.htm | 9946 | 2021-11-05 06:04:09 |
| R41.htm | 6193 | 2021-11-05 06:04:09 |
| R42.htm | 7686 | 2021-11-05 06:04:09 |
| R43.htm | 2905 | 2021-11-05 06:04:09 |
| R44.htm | 14786 | 2021-11-05 06:04:09 |
| R45.htm | 3613 | 2021-11-05 06:04:09 |
| R46.htm | 34001 | 2021-11-05 06:04:09 |
| R47.htm | 3152 | 2021-11-05 06:04:09 |
| R48.htm | 5942 | 2021-11-05 06:04:09 |
| R49.htm | 2542 | 2021-11-05 06:04:09 |
| R5.htm | 52362 | 2021-11-05 06:04:09 |
| R50.htm | 13348 | 2021-11-05 06:04:09 |
| R51.htm | 8111 | 2021-11-05 06:04:09 |
| R52.htm | 14574 | 2021-11-05 06:04:09 |
| R53.htm | 6540 | 2021-11-05 06:04:09 |
| R54.htm | 3861 | 2021-11-05 06:04:09 |
| R55.htm | 28502 | 2021-11-05 06:04:09 |
| R56.htm | 6969 | 2021-11-05 06:04:09 |
| R57.htm | 7188 | 2021-11-05 06:04:09 |
| R58.htm | 31798 | 2021-11-05 06:04:09 |
| R59.htm | 19264 | 2021-11-05 06:04:09 |
| R6.htm | 84737 | 2021-11-05 06:04:09 |
| R60.htm | 7529 | 2021-11-05 06:04:09 |
| R61.htm | 13044 | 2021-11-05 06:04:09 |
| R62.htm | 33379 | 2021-11-05 06:04:09 |
| R63.htm | 16738 | 2021-11-05 06:04:09 |
| R64.htm | 46973 | 2021-11-05 06:04:09 |
| R65.htm | 34080 | 2021-11-05 06:04:09 |
| R66.htm | 12357 | 2021-11-05 06:04:09 |
| R67.htm | 5369 | 2021-11-05 06:04:09 |
| R68.htm | 7696 | 2021-11-05 06:04:09 |
| R69.htm | 15445 | 2021-11-05 06:04:09 |
| R7.htm | 10874 | 2021-11-05 06:04:09 |
| R70.htm | 11301 | 2021-11-05 06:04:09 |
| R71.htm | 3579 | 2021-11-05 06:04:09 |
| R72.htm | 5504 | 2021-11-05 06:04:09 |
| R73.htm | 47167 | 2021-11-05 06:04:09 |
| R74.htm | 3822 | 2021-11-05 06:04:09 |
| R75.htm | 3772 | 2021-11-05 06:04:09 |
| R8.htm | 15458 | 2021-11-05 06:04:09 |
| R9.htm | 6536 | 2021-11-05 06:04:09 |
| report.css | 2767 | 2021-11-05 06:04:09 |
| Show.js | 1085 | 2021-11-05 06:04:09 |