Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-13-371742-index-headers.html | 2013-09-19 16:16:26 | |
| 0001193125-13-371742-index.html | 2013-09-19 16:16:26 | |
| 0001193125-13-371742.txt | 2013-09-19 16:16:26 | |
 0001193125-13-371742-xbrl.zip | 174202 | 2013-09-19 16:16:26 |
| d559767d10k.htm | 877119 | 2013-09-19 16:16:26 |
| d559767dex1040.htm | 62067 | 2013-09-19 16:16:26 |
| d559767dex1041.htm | 3450 | 2013-09-19 16:16:26 |
| d559767dex1042.htm | 3415 | 2013-09-19 16:16:26 |
| d559767dex21.htm | 1984 | 2013-09-19 16:16:26 |
| d559767dex231.htm | 3586 | 2013-09-19 16:16:26 |
| d559767dex311.htm | 6178 | 2013-09-19 16:16:26 |
| d559767dex312.htm | 6160 | 2013-09-19 16:16:26 |
| d559767dex32.htm | 4035 | 2013-09-19 16:16:26 |
| FilingSummary.xml | 34223 | 2013-09-19 16:16:26 |
| Financial_Report.xls | 840024 | 2013-09-19 16:16:26 |
| naii-20130630.xml | 1002546 | 2013-09-19 16:16:26 |
| naii-20130630.xsd | 53609 | 2013-09-19 16:16:26 |
| naii-20130630_cal.xml | 85611 | 2013-09-19 16:16:26 |
| naii-20130630_def.xml | 395363 | 2013-09-19 16:16:26 |
| naii-20130630_lab.xml | 532122 | 2013-09-19 16:16:26 |
| naii-20130630_pre.xml | 463416 | 2013-09-19 16:16:26 |
| R1.htm | 39439 | 2013-09-19 16:16:26 |
| R1.xml | 47435 | 2013-09-19 16:16:26 |
| R10.htm | 9965 | 2013-09-19 16:16:26 |
| R10.xml | 10598 | 2013-09-19 16:16:26 |
| R11.htm | 45806 | 2013-09-19 16:16:26 |
| R11.xml | 58668 | 2013-09-19 16:16:26 |
| R12.htm | 73676 | 2013-09-19 16:16:26 |
| R12.xml | 95171 | 2013-09-19 16:16:26 |
| R13.htm | 43067 | 2013-09-19 16:16:26 |
| R13.xml | 53987 | 2013-09-19 16:16:26 |
| R14.htm | 12369 | 2013-09-19 16:16:26 |
| R14.xml | 14654 | 2013-09-19 16:16:26 |
| R15.htm | 15921 | 2013-09-19 16:16:26 |
| R15.xml | 19449 | 2013-09-19 16:16:26 |
| R16.htm | 13746 | 2013-09-19 16:16:26 |
| R16.xml | 13360 | 2013-09-19 16:16:26 |
| R17.htm | 11763 | 2013-09-19 16:16:26 |
| R17.xml | 12757 | 2013-09-19 16:16:26 |
| R18.htm | 50692 | 2013-09-19 16:16:26 |
| R18.xml | 63986 | 2013-09-19 16:16:26 |
| R19.htm | 142024 | 2013-09-19 16:16:26 |
| R19.xml | 131651 | 2013-09-19 16:16:26 |
| R2.htm | 112652 | 2013-09-19 16:16:26 |
| R2.xml | 104288 | 2013-09-19 16:16:26 |
| R20.htm | 14185 | 2013-09-19 16:16:26 |
| R20.xml | 18400 | 2013-09-19 16:16:26 |
| R21.htm | 9981 | 2013-09-19 16:16:26 |
| R21.xml | 12582 | 2013-09-19 16:16:26 |
| R22.htm | 18573 | 2013-09-19 16:16:26 |
| R22.xml | 23669 | 2013-09-19 16:16:26 |
| R23.htm | 48649 | 2013-09-19 16:16:26 |
| R23.xml | 60320 | 2013-09-19 16:16:26 |
| R24.htm | 85428 | 2013-09-19 16:16:26 |
| R24.xml | 102654 | 2013-09-19 16:16:26 |
| R25.htm | 38197 | 2013-09-19 16:16:26 |
| R25.xml | 49087 | 2013-09-19 16:16:26 |
| R26.htm | 9801 | 2013-09-19 16:16:26 |
| R26.xml | 12169 | 2013-09-19 16:16:26 |
| R27.htm | 14492 | 2013-09-19 16:16:26 |
| R27.xml | 17894 | 2013-09-19 16:16:26 |
| R28.htm | 50118 | 2013-09-19 16:16:26 |
| R28.xml | 62381 | 2013-09-19 16:16:26 |
| R29.htm | 94757 | 2013-09-19 16:16:26 |
| R29.xml | 358986 | 2013-09-19 16:16:26 |
| R3.htm | 31060 | 2013-09-19 16:16:26 |
| R3.xml | 33537 | 2013-09-19 16:16:26 |
| R30.htm | 27985 | 2013-09-19 16:16:26 |
| R30.xml | 30400 | 2013-09-19 16:16:26 |
| R31.htm | 18362 | 2013-09-19 16:16:26 |
| R31.xml | 20004 | 2013-09-19 16:16:26 |
| R32.htm | 32339 | 2013-09-19 16:16:26 |
| R32.xml | 150382 | 2013-09-19 16:16:26 |
| R33.htm | 65922 | 2013-09-19 16:16:26 |
| R33.xml | 195635 | 2013-09-19 16:16:26 |
| R34.htm | 33344 | 2013-09-19 16:16:26 |
| R34.xml | 33595 | 2013-09-19 16:16:26 |
| R35.htm | 50911 | 2013-09-19 16:16:26 |
| R35.xml | 50239 | 2013-09-19 16:16:26 |
| R36.htm | 24542 | 2013-09-19 16:16:26 |
| R36.xml | 48660 | 2013-09-19 16:16:26 |
| R37.htm | 26064 | 2013-09-19 16:16:26 |
| R37.xml | 27696 | 2013-09-19 16:16:26 |
| R38.htm | 21335 | 2013-09-19 16:16:26 |
| R38.xml | 33180 | 2013-09-19 16:16:26 |
| R39.htm | 44665 | 2013-09-19 16:16:26 |
| R39.xml | 60033 | 2013-09-19 16:16:26 |
| R4.htm | 72254 | 2013-09-19 16:16:26 |
| R4.xml | 71997 | 2013-09-19 16:16:26 |
| R40.htm | 18185 | 2013-09-19 16:16:26 |
| R40.xml | 20029 | 2013-09-19 16:16:26 |
| R41.htm | 18949 | 2013-09-19 16:16:26 |
| R41.xml | 20220 | 2013-09-19 16:16:26 |
| R42.htm | 20693 | 2013-09-19 16:16:26 |
| R42.xml | 17362 | 2013-09-19 16:16:26 |
| R43.htm | 11487 | 2013-09-19 16:16:26 |
| R43.xml | 13216 | 2013-09-19 16:16:26 |
| R44.htm | 14365 | 2013-09-19 16:16:26 |
| R44.xml | 54547 | 2013-09-19 16:16:26 |
| R45.htm | 17529 | 2013-09-19 16:16:26 |
| R45.xml | 88656 | 2013-09-19 16:16:26 |
| R46.htm | 14426 | 2013-09-19 16:16:26 |
| R46.xml | 78251 | 2013-09-19 16:16:26 |
| R47.htm | 20892 | 2013-09-19 16:16:26 |
| R47.xml | 32823 | 2013-09-19 16:16:26 |
| R48.htm | 58666 | 2013-09-19 16:16:26 |
| R48.xml | 87682 | 2013-09-19 16:16:26 |
| R49.htm | 28795 | 2013-09-19 16:16:26 |
| R49.xml | 29430 | 2013-09-19 16:16:26 |
| R5.htm | 58343 | 2013-09-19 16:16:26 |
| R5.xml | 215734 | 2013-09-19 16:16:26 |
| R50.htm | 13311 | 2013-09-19 16:16:26 |
| R50.xml | 27199 | 2013-09-19 16:16:26 |
| R51.htm | 24003 | 2013-09-19 16:16:26 |
| R51.xml | 20442 | 2013-09-19 16:16:26 |
| R52.htm | 13119 | 2013-09-19 16:16:26 |
| R52.xml | 51236 | 2013-09-19 16:16:26 |
| R53.htm | 7131 | 2013-09-19 16:16:26 |
| R53.xml | 19382 | 2013-09-19 16:16:26 |
| R54.htm | 32122 | 2013-09-19 16:16:26 |
| R54.xml | 80697 | 2013-09-19 16:16:26 |
| R55.htm | 10546 | 2013-09-19 16:16:26 |
| R55.xml | 12402 | 2013-09-19 16:16:26 |
| R56.htm | 9676 | 2013-09-19 16:16:26 |
| R56.xml | 19983 | 2013-09-19 16:16:26 |
| R57.htm | 20470 | 2013-09-19 16:16:26 |
| R57.xml | 93709 | 2013-09-19 16:16:26 |
| R58.htm | 7897 | 2013-09-19 16:16:26 |
| R58.xml | 26816 | 2013-09-19 16:16:26 |
| R59.htm | 15299 | 2013-09-19 16:16:26 |
| R59.xml | 44572 | 2013-09-19 16:16:26 |
| R6.htm | 97853 | 2013-09-19 16:16:26 |
| R6.xml | 98843 | 2013-09-19 16:16:26 |
| R7.htm | 58130 | 2013-09-19 16:16:26 |
| R7.xml | 64637 | 2013-09-19 16:16:26 |
| R8.htm | 11204 | 2013-09-19 16:16:26 |
| R8.xml | 13738 | 2013-09-19 16:16:26 |
| R9.htm | 19302 | 2013-09-19 16:16:26 |
| R9.xml | 24347 | 2013-09-19 16:16:26 |
| report.css | 2741 | 2013-09-19 16:16:26 |
| Show.js | 1410 | 2013-09-19 16:16:26 |