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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 21
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-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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- Definition

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.

+ References

No definition available.

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(a)(4))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Name Accounting Standards Codification
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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenue and Other [Line Items]
Retained earnings	$ 702,915			$ 595,038
Revenue	995,075	$ 760,833
Accounts receivable, net of allowance	325,263			304,027
Google Inc.
Revenue and Other [Line Items]
Accounts receivable, net of allowance	79,200			72,400
Google Inc. \| Publishing and Applications
Revenue and Other [Line Items]
Revenue	$ 211,300	$ 187,800
Google Inc. \| Revenue \| Customer concentration risk
Revenue and Other [Line Items]
Concentration risk (as a percent)	21.00%	25.00%
Google Inc. \| Revenue \| Customer concentration risk \| Operating segments \| Publishing
Revenue and Other [Line Items]
Concentration risk (as a percent)	76.00%	70.00%
Google Inc. \| Revenue \| Customer concentration risk \| Operating segments \| Applications
Revenue and Other [Line Items]
Concentration risk (as a percent)	82.00%	84.00%
Match Group, Inc.
Revenue and Other [Line Items]
Economic interest (as a percent)	80.90%
Voting interest (as a percent)	97.60%
ANGI Homeservices
Revenue and Other [Line Items]
Economic interest (as a percent)	86.80%
Voting interest (as a percent)	98.50%
Accounting Standards Update 2014-09
Revenue and Other [Line Items]
Retained earnings			$ 40,200	$ 3,400
Accounting Standards Update 2014-09 \| Applications
Revenue and Other [Line Items]
Retained earnings			$ 15,500