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Borrowings Borrowings - Note Payable to Related Party (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 0 Months Ended
Apr. 16, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Note payable to related party, current   $ 1.3us-gaap_NotesPayableRelatedPartiesClassifiedCurrent
Note payable to related party, noncurrent   2.6us-gaap_NotesPayableRelatedPartiesNoncurrent
Unit Purchase Agreement [Member] | StreetLinks LLC [Member]    
Debt Instrument [Line Items]    
Units transferred 1,218novc_ConsolidationLessthanWhollyOwnedSubsidiaryParentOwnershipInterestChangesTransferofInterestbyParentShares
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember		  
Note payable to related party 3.9us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember		  
Note payable to related party, future interest payments $ 0.2novc_NotesPayableRelatedPartiesFutureInterestPayments
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember