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Income Taxes Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Summary of Income before income taxes by geography
US	$ 14,382us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	$ 8,730us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	$ 10,851us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Non-US	42,228us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	32,002us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	44,994us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Income before income taxes and loss in equity interests	56,610us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	40,732us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	55,845us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income Tax Expense (Benefit) [Abstract]
U.S. Federal	10,742us-gaap_CurrentFederalTaxExpenseBenefit	7,120us-gaap_CurrentFederalTaxExpenseBenefit	9,053us-gaap_CurrentFederalTaxExpenseBenefit
U.S. State	3,576us-gaap_CurrentStateAndLocalTaxExpenseBenefit	1,458us-gaap_CurrentStateAndLocalTaxExpenseBenefit	2,525us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Non-US	8,273us-gaap_CurrentForeignTaxExpenseBenefit	3,477us-gaap_CurrentForeignTaxExpenseBenefit	4,559us-gaap_CurrentForeignTaxExpenseBenefit
Total Current:	22,591us-gaap_CurrentIncomeTaxExpenseBenefit	12,055us-gaap_CurrentIncomeTaxExpenseBenefit	16,137us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
U.S. Federal	(3,754)us-gaap_DeferredFederalIncomeTaxExpenseBenefit	(274)us-gaap_DeferredFederalIncomeTaxExpenseBenefit	(2,151)us-gaap_DeferredFederalIncomeTaxExpenseBenefit
U.S. State	(897)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit	(163)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit	(625)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Non-US	(7,350)us-gaap_DeferredForeignIncomeTaxExpenseBenefit	(2,231)us-gaap_DeferredForeignIncomeTaxExpenseBenefit	(1,510)us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Total Deferred taxes	(12,001)vprt_DeferredBenefitsRelatedToIncomeTaxExpense	(2,668)vprt_DeferredBenefitsRelatedToIncomeTaxExpense	(4,286)vprt_DeferredBenefitsRelatedToIncomeTaxExpense
Total	$ 10,590us-gaap_IncomeTaxExpenseBenefit	$ 9,387us-gaap_IncomeTaxExpenseBenefit	$ 11,851us-gaap_IncomeTaxExpenseBenefit
Reconciliation of the standard U.S. statutory tax rate and the Company's effective tax rate
US federal statutory income tax rate (percentage)	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State taxes, net of federal effect (percentage)	3.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	2.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	2.20%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Tax rate differential on non-U.S. earnings (percent)	(19.30%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	(23.80%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	(21.30%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Compensation related items (percent)	4.30%us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther	6.50%us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther	6.10%us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther
Increase in valuation allowance (percent)	4.80%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	5.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	1.60%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Tax benefit from Canadian tax currency election	0.00%vprt_TaxbenefitfromCanadiantaxcurrencyelection	(4.70%)vprt_TaxbenefitfromCanadiantaxcurrencyelection	0.00%vprt_TaxbenefitfromCanadiantaxcurrencyelection
Tax on IP transfer	(16.10%)vprt_TaxonIPtransfer	3.70%vprt_TaxonIPtransfer	1.60%vprt_TaxonIPtransfer
Nondeductible loss on investment in NAMEX	3.80%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.00%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.00%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense
Other (percent)	3.10%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments	(0.80%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments	(4.00%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective Income Tax Rate, Continuing Operations	18.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations	23.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations	21.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations

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Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Tax benefit from Canadian tax currency election

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