Marketable Securities - Continuous Unrealized Loss Position (Details) (USD $) In Thousands, unless otherwise specified
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9 Months Ended |
Mar. 31, 2015 |
Investments in an Unrealized Loss Position |
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Fair Value |
398082美元us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue |
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Gross Unrealized Losses, less than 12 months |
(314)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss |
[1] |
Continuous loss position not exceeding this period |
12 months |
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U.S. Treasury securities |
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Investments in an Unrealized Loss Position |
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Fair Value |
131,732us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember |
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Gross Unrealized Losses, less than 12 months |
(25)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasurySecuritiesMember |
[1] |
U.S. Government agency securities |
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Investments in an Unrealized Loss Position |
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Fair Value |
85,554us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember |
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Gross Unrealized Losses, less than 12 months |
(52)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentAgenciesDebtSecuritiesMember |
[1] |
Municipal securities |
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Investments in an Unrealized Loss Position |
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Fair Value |
22,429us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MunicipalBondsMember |
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Gross Unrealized Losses, less than 12 months |
(36)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MunicipalBondsMember |
[1] |
Corporate debt securities |
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Investments in an Unrealized Loss Position |
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Fair Value |
139,007us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember |
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Gross Unrealized Losses, less than 12 months |
(193)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember |
[1] |
Sovereign securities |
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Investments in an Unrealized Loss Position |
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Fair Value |
19,360us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_SovereignDebtSecuritiesMember |
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Gross Unrealized Losses, less than 12 months |
$ (8)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_SovereignDebtSecuritiesMember |
[1] |
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