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Goodwill - Additional Information (Detail) - USD ($) $ in Thousands		9 Months Ended
	Jun. 08, 2016	Sep. 30, 2016	Dec. 31, 2015	Dec. 08, 2015
Goodwill [Line Items]
Goodwill		$ 166,083	$ 161,753
Interactive Data [Member]
Goodwill [Line Items]
Goodwill		$ 5,227
Effective date of business acquisition		Oct. 02, 2014
Fluent Acquisition [Member]
Goodwill [Line Items]
Goodwill		$ 155,645		$ 155,645
Effective date of business acquisition		Dec. 08, 2015
Q Interactive​, LLC [Member]
Goodwill [Line Items]
Goodwill	$ 5,211	$ 5,211
Effective date of business acquisition	Jun. 08, 2016	Jun. 08, 2016

X

- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e845-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Acquisition Date
-URI http://asc.fasb.org/extlink&oid=6919109

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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-Name Accounting Standards Codification
-Topic 350
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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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