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Commitments and Contingencies (Details) (USD $)
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Commitments and Contingencies [Abstract]      
Lease payments $ 269,473us-gaap_PaymentsForProceedsFromLoansAndLeases $ 265,357us-gaap_PaymentsForProceedsFromLoansAndLeases $ 259,823us-gaap_PaymentsForProceedsFromLoansAndLeases
2014 269,662us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent    
2015 270,677us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears    
2016 274,736us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears    
2017 277,831us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears    
2018 281,765us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears    
2019 213,727nvec_OperatingLeasesFutureMinimumPaymentsDueInSixYears    
Total $ 1,588,398us-gaap_OperatingLeasesFutureMinimumPaymentsDue