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Business Combinations and Consolidation - Narrative (Details) (USD $)
12 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
May 20, 2013
Dec. 31, 2013
Apr. 16, 2014
Mar. 08, 2012
Business Acquisition [Line Items]            
Acquisition of noncontrolling interest for extinguishment of intercompany debt $ 0novc_ExchangeofNoncontrollingInterestforExtinguishmentofIntercompanyDebt $ 1,863,000novc_ExchangeofNoncontrollingInterestforExtinguishmentofIntercompanyDebt        
Advent Financial Services LLC [Member]            
Business Acquisition [Line Items]            
Increase in ownership percentage     22.00%novc_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesIncreaseInOwnershipPercentage
/ dei_LegalEntityAxis
= novc_AdventFinancialServicesLlcMember
     
Ownership percentage, by parent   100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= novc_AdventFinancialServicesLlcMember
  100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= novc_AdventFinancialServicesLlcMember
   
Acquisition of noncontrolling interest for extinguishment of intercompany debt     1,900,000novc_ExchangeofNoncontrollingInterestforExtinguishmentofIntercompanyDebt
/ dei_LegalEntityAxis
= novc_AdventFinancialServicesLlcMember
     
Corvisa LLC (formerly CorvisaCloud, LLC) [Member]            
Business Acquisition [Line Items]            
Increase in ownership percentage       15.00%novc_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesIncreaseInOwnershipPercentage
/ dei_LegalEntityAxis
= novc_CorvisaLLCFormerlyCorvisaCloudLLCMember
   
Purchase price       600,000us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParent
/ dei_LegalEntityAxis
= novc_CorvisaLLCFormerlyCorvisaCloudLLCMember
   
Ownership percentage, by parent 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= novc_CorvisaLLCFormerlyCorvisaCloudLLCMember
100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= novc_CorvisaLLCFormerlyCorvisaCloudLLCMember
  100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= novc_CorvisaLLCFormerlyCorvisaCloudLLCMember
   
StreetLinks LLC [Member]            
Business Acquisition [Line Items]            
Increase in ownership percentage           5.00%novc_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesIncreaseInOwnershipPercentage
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
Ownership percentage, by parent         88.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
 
Decrease in ownership percentage         3.00%novc_ConsolidationLessthanWhollyOwnedSubsidiaryParentOwnershipInterestChangesTransferofInterestbyParentDecreaseinOwnershipPercentage
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
 
Unit Purchase Agreement [Member] | StreetLinks LLC [Member]            
Business Acquisition [Line Items]            
Membership units           1,927novc_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParentShares
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember
Purchase price           6,100,000us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParent
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember
Interest rate   4.00%novc_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesPurchaseOfInterestByParentInterestRate
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember
       
Units transferred         1,218novc_ConsolidationLessthanWhollyOwnedSubsidiaryParentOwnershipInterestChangesTransferofInterestbyParentShares
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember
 
Note payable to related party         3,900,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember
 
Note payable to related party, future interest payments         200,000novc_NotesPayableRelatedPartiesFutureInterestPayments
/ dei_LegalEntityAxis
= novc_StreetlinksLlcMember
/ novc_MaterialDefinitiveAgreementAxis
= novc_UnitPurchaseAgreementMember