Acquisitions - Intangible Assets Acquired (Details) - Lovoo, Inc.	Oct. 19, 2017 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 16,970,000
Weighted Average Amortization Period (Years)	9 years 1 month 6 days
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 12,090,000
Weighted Average Amortization Period (Years)	10 years
Software
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 1,335,000
Weighted Average Amortization Period (Years)	2 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 3,545,000
Weighted Average Amortization Period (Years)	8 years 8 months 19 days

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.

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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