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Income Taxes (Details Textuals) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Operating Loss Carryforwards [Line Items]      
Deferred tax liabilities $ 2,178us-gaap_DeferredTaxLiabilitiesCurrent $ 1,466us-gaap_DeferredTaxLiabilitiesCurrent  
Current portion of deferred tax assets 717us-gaap_DeferredTaxAssetsNetCurrent 648us-gaap_DeferredTaxAssetsNetCurrent  
Deferred tax assets, share-based compensation cost 14,712us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost 11,897us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost  
Deferred tax assets from net operating loss carryforwards 15,066us-gaap_DeferredTaxAssetsOperatingLossCarryforwards 6,905us-gaap_DeferredTaxAssetsOperatingLossCarryforwards  
Undistributed earnings 112,542vprt_UndistributedSubsidiaryEarnings    
Unrecognized tax benefits that would impact effective tax rate, if recognized 3,061us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 2,157us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate  
Accrued interest and penalty related to unrecognized tax benefits included in income tax provisions 298us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 241us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued  
Unrecognized Tax Benefits 6,744us-gaap_UnrecognizedTaxBenefits 5,682us-gaap_UnrecognizedTaxBenefits 6,320us-gaap_UnrecognizedTaxBenefits
U S Federal And State [Member]      
Operating Loss Carryforwards [Line Items]      
Deferred tax assets from net operating loss carryforwards 1,010us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= vprt_USFederalAndStateMember		    
Operating loss carryforwards expiration dates Jun. 30, 2034    
Foreign Tax Authority [Member]      
Operating Loss Carryforwards [Line Items]      
Foreign net operating loss carryforwards subject to expiration $ 94,492us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember		    
Minimum [Member] | Foreign Tax Authority [Member]      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards expiration dates Jun. 30, 2021    
Maximum [Member] | Foreign Tax Authority [Member]      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards expiration dates Jun. 30, 2031