Document and Entity Information	9 Months Ended
	Dec. 31, 2012	Jan. 18, 2013
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2012
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2013
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		4,860,436