Intangible assets (Tables)

12 Months Ended

Dec. 31, 2015

Intangible assets

Schedule of changes in intangible assets

	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

Schedule of intangible assets

        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

Schedule of amortization expense for fiscal years 2016 through 2020 and thereafter

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