Cash And Cash Equivalents And Short-Term Investments, Accumulated Unrealized Gain

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- Definition

Cash, Cash Equivalents, And Short-term Investments, Amortized Cost

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- Definition

Equity Securities, FV-NI, Accumulated Foreign Currency Translation Gain (Loss)

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- Definition

Equity Securities, FV-NI, Accumulated Unrealized Gain

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- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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No definition available.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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- Definition

Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
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-Paragraph 4
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Balance Sheet Account Detail - Summary of Cash and Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Jan. 01, 2018
Schedule of Investments [Line Items]
Cost of equity securities	$ 8,710		$ 8,710
Foreign currency translation on equity securities	(4,678)		(2,168)
Gross unrealized gain on equity securities	28,121		39,880
Equity securities (Note 7)	32,153		46,422
Cash, cash equivalents and short-term investments, amortized cost	254,809		166,276
Cash and cash equivalents and short-term investments, accumulated unrealized gain	28,254
Cash, cash equivalents, and short-term investments	278,385		203,988
Equity securities, unrealized gain (loss)	400	$ (11,800)
Accounting Standards Update 2016-01 [Member]
Schedule of Investments [Line Items]
Cumulative effect of new accounting principle in period of adoption				$ 0
Retained Earnings [Member] \| Accounting Standards Update 2016-01 [Member]
Schedule of Investments [Line Items]
Cumulative effect of new accounting principle in period of adoption				17,211
AOCI Attributable to Parent [Member] \| Accounting Standards Update 2016-01 [Member]
Schedule of Investments [Line Items]
Cumulative effect of new accounting principle in period of adoption				$ (17,211)
Money market funds [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, amortized cost	72,384		142,745
Available-for-sale, debt securities, estimated fair value	72,384		142,745
US Government Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, amortized cost	104,440
Debt securities, available for sale, unrealized gain	95
Available-for-sale, debt securities, estimated fair value	104,535
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, amortized cost	39,818
Debt securities, available for sale, unrealized gain	25
Available-for-sale, debt securities, estimated fair value	39,843
Bank Deposits [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, amortized cost	22,886		14,735
Debt securities, available for sale, unrealized gain	0
Available-for-sale, debt securities, estimated fair value	22,886		14,735
Bank CDs [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, amortized cost	6,571		86
Debt securities, available for sale, unrealized gain	13
Available-for-sale, debt securities, estimated fair value	6,584		86
Cash and Cash Equivalents [Member]
Schedule of Investments [Line Items]
Cash, cash equivalents, and short-term investments	118,251		157,480
Cash and Cash Equivalents [Member] \| Money market funds [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, estimated fair value	72,384		142,745
Cash and Cash Equivalents [Member] \| US Government Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, estimated fair value	7,497
Cash and Cash Equivalents [Member] \| Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, estimated fair value	15,484
Cash and Cash Equivalents [Member] \| Bank Deposits [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, estimated fair value	22,886		14,735
Short-term Investments [Member]
Schedule of Investments [Line Items]
Equity securities (Note 7)	32,153		46,422
Cash, cash equivalents, and short-term investments	160,134		46,508
Short-term Investments [Member] \| US Government Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, estimated fair value	97,038
Short-term Investments [Member] \| Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, estimated fair value	24,359
Short-term Investments [Member] \| Bank Deposits [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, estimated fair value	0
Short-term Investments [Member] \| Bank CDs [Member]
Schedule of Investments [Line Items]
Available-for-sale, debt securities, estimated fair value	$ 6,584		$ 86