Intangible assets

12 Months Ended

Dec. 31, 2015

Intangible assets

Intangible assets

8. Intangible assets

        The following table sets forth the changes in our intangible assets balance, for all periods presented:

	Intangible Assets
Balance, December 31, 2013	$	23,413
Amortization expense		(3,682	)
Impairment loss		(55	)
Balance, December 31, 2014		19,676
Amortization expense		(3,594	)
Impairment loss		(27	)
Balance, December 31, 2015	$	16,055

        During 2015, we recorded impairment losses for the termination of a contract and certain patent applications that we abandoned. During 2014, we recorded impairment losses for certain patent applications that we abandoned.

        Intangible assets at December 31, 2015 consist of the following:

	Historical Cost		Accumulated Amortization			Net
Venue contracts	$	23,630	$	(11,104	)	$	12,526
Non-compete agreements		3,590		(1,556	)		2,034
Technology		2,310		(1,295	)		1,015
Advertiser relationships		70		(48	)		22
Patents, trademarks and other		1,034		(576	)		458
	$	30,634	$	(14,579	)	$	16,055

        Intangible assets at December 31, 2014 consist of the following:

	Historical Cost		Accumulated Amortization			Net
Venue contracts	$	36,356	$	(21,582	)	$	14,774
Non-compete agreements		3,840		(1,067	)		2,773
Technology		2,300		(863	)		1,437
Advertiser relationships		70		(34	)		36
Patents, trademarks and other		1,353		(697	)		656
	$	43,919	$	(24,243	)	$	19,676

        The decrease in our intangible assets cost and accumulated amortization balances from 2014 to 2015 related to the write-off of intangible assets that were impaired as well as intangible assets that have expired.

        Amortization expense for fiscal years 2016 through 2020 and thereafter is as follows:

Year	Amortization Expense
2016	$	3,451
2017		3,221
2018		2,372
2019		1,634
2020		1,556
Thereafter		3,821
	$	16,055