v3.8.0.1

Intangible assets - Carrying Amount (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Intangible assets
Historical Cost	$ 28,905	$ 31,815
Accumulated Amortization	(18,642)	(18,032)
Net	10,263	13,783	$ 16,055
Venue contracts
Intangible assets
Historical Cost	22,061	23,601
Accumulated Amortization	(13,835)	(13,276)
Net	8,226	10,325
Non-compete agreements
Intangible assets
Historical Cost	3,590	3,590
Accumulated Amortization	(2,992)	(2,274)
Net	598	1,316
Technology
Intangible assets
Historical Cost	2,410	3,520
Accumulated Amortization	(1,265)	(1,742)
Net	1,145	1,778
Advertiser relationships
Intangible assets
Historical Cost		70
Accumulated Amortization		(62)
Net		8
Patents, trademarks and other
Intangible assets
Historical Cost	844	1,034
Accumulated Amortization	(550)	(678)
Net	$ 294	$ 356

X

- 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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X

- Definition

Amount before 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

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.

+ Details

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- Definition

Amount after 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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