The amount of expense recognized in the current period that reflects the allocation of the costs of intangible assets over the expected benefit period of such assets. This element applies only to intangible assets used in the delivery of services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(d))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of accumulated impairment loss for 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,h)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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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

Percentage of estimated fair values.

+ References

No definition available.

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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Accumulated Impairment Loss on Goodwill	$ 229.7	$ 229.7
Intangible asset amortization expense	$ 7.2	$ 2.7	$ 1.3
Customer Contracts
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years 2 months 12 days
Other
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years 1 month 6 days
Marketing & Events U.S. Segment
Goodwill [Line Items]
Percentage of estimated fair values	146.00%
GES EMEA \| Marketing & Events International Segment
Goodwill [Line Items]
Percentage of estimated fair values	132.00%
GES Canada \| Marketing & Events International Segment
Goodwill [Line Items]
Percentage of estimated fair values	91.00%
Brewster \| Travel & Recreation Group
Goodwill [Line Items]
Percentage of estimated fair values	146.00%
Alaska Denali Travel \| Travel & Recreation Group
Goodwill [Line Items]
Percentage of estimated fair values	48.00%
Glacier Park \| Travel & Recreation Group
Goodwill [Line Items]
Percentage of estimated fair values	10.00%