Goodwill and Intangible Assets - Changes in Goodwill Balance (Details) $ in Thousands	1 Months Ended	9 Months Ended
Jun. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) item
Goodwill
Goodwill, Beginning Balance		$ 17,152
Acquisition - preliminary allocation		1,832
Foreign currency impact		(30)
Goodwill, Ending Balance		$ 18,954
Number of reporting units \| item		2
Marketplaces
Goodwill
Goodwill, Ending Balance		$ 17,100
Well+Good \| Media
Goodwill
Acquisition - preliminary allocation	$ 1,800

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 20
-Section 50
-Paragraph 1
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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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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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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