Document and Entity Information | 3 Months Ended | |
|---|---|---|
Sep. 30, 2011 | Oct. 14, 2011 | |
| Document and Entity Information [Abstract] | ||
| Document Type | 10-Q | |
| Amendment Flag | false | |
| Document Period End Date | Sep. 30, 2011 | |
| Document Fiscal Period Focus | Q2 | |
| Document Fiscal Year Focus | 2012 | |
| Entity Registrant Name | NVE CORP /NEW/ | |
| Entity Central Index Key | 0000724910 | |
| Current Fiscal Year End Date | --03-31 | |
| Entity Filer Category | Accelerated Filer | |
| Entity Common Stock, Shares Outstanding | 4,776,198 |