Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities - Amortized Cost and Fair Value (Details)

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Marketable Securities - Amortized Cost and Fair Value (Details)
Mar. 31, 2020
美元（$）
investment
2019年6月30日
美元（$）
Debt Securities, Available-for-sale [Line Items]
Amortized Cost $ 1,104,497,000 $ 1,161,649,000
总未实现的收益 3,036,000 189,000
总未实现的损失 (3,320,000) （1,232,000）
Fair Value 1,104,213,000 1,160,606,000
Add: Time deposits [1] 85,834,000 99,006,000
Marketable securities, Amortized Cost 688,639,000 724,449,000
Marketable securities, Gross Unrealized Gains 3,036,000 172,000
Marketable securities, Gross Unrealized Losses （3,319,000） （1,230,000）
可销售的证券，公允价值 $ 688,356,000 723,391,000
Number of investments in an unrealized loss position | investment 182
投资连续损失位置，多12个或更多 $ 0
现金及现金等价物
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 501,692,000 536,206,000
总未实现的收益 0 17,000
总未实现的损失 (1,000) (2,000)
Fair Value 501,691,000 536,221,000
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 389,870,000 433,518,000
总未实现的收益 307,000 141,000
总未实现的损失 (3,302,000) （582,000）
Fair Value 386,875,000 433,077,000
Money market funds and other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 415,952,000 352,708,000
总未实现的收益 0 0
总未实现的损失 0 0
Fair Value 415,952,000 352,708,000
市政证券
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 19,531,000 1,910,000
总未实现的收益 161,000 3,000
总未实现的损失 (9,000) 0
Fair Value 19,683,000 1,913,000
Sovereign securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 6,018,000 6,001,000
总未实现的收益 30,000 1,000
总未实现的损失 0 （8,000）
Fair Value 6,048,000 5,994,000
美国政府机构证券
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 78,416,000 159,454,000
总未实现的收益 272,000 5,000
总未实现的损失 （8,000） （241,000）
Fair Value 78,680,000 159,218,000
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 194,710,000 208,058,000
总未实现的收益 2,266,000 39,000
总未实现的损失 (1,000) (401,000)
Fair Value $ 196,975,000 $ 207,696,000
Corporate and Government securities
Debt Securities, Available-for-sale [Line Items]
Investment portfolio, maximum maturity term 3年
[1] Time deposits excluded from fair value measurements.
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