Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Dec. 31, 2017
Amortizing intangible assets:
Gross Carrying Amount	$ 48,600	$ 51,155
Accumulated Amortization	(16,420)	(16,958)
Customer relationships
Amortizing intangible assets:
Gross Carrying Amount	18,642	21,008
Accumulated Amortization	$ (6,097)	(6,996)
Weighted Average Life	9 years
Trade name
Amortizing intangible assets:
Gross Carrying Amount	$ 6,916	7,159
Accumulated Amortization	$ (3,259)	(3,299)
Weighted Average Life	7 years
Developed technology
Amortizing intangible assets:
Gross Carrying Amount	$ 5,046	5,528
Accumulated Amortization	$ (3,443)	(3,450)
Weighted Average Life	4 years
Contributor content
Amortizing intangible assets:
Gross Carrying Amount	$ 17,577	17,041
Accumulated Amortization	$ (3,470)	(3,066)
Weighted Average Life	11 years
Patents
Amortizing intangible assets:
Gross Carrying Amount	$ 259	259
Accumulated Amortization	$ (72)	(68)
Weighted Average Life	18 years
Domain name
Amortizing intangible assets:
Gross Carrying Amount	$ 160	160
Accumulated Amortization	$ (79)	$ (79)
Weighted Average Life	13 years

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

+ Details

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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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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