Segment Information - Reconciliation of Income Statement Items from Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reportable segments reconciliations:
Total revenue		$ 324,747	$ 317,035	$ 566,109	$ 581,431
Segment operating income		31,307	34,303	23,116	30,368
Interest income		38	443	94	506
Interest expense		(1,336)	(1,103)	(2,620)	(2,254)
Restructuring charges		(975)	(1,069)	(1,967)	(1,285)
Income from continuing operations before income taxes		29,034	32,574	18,623	27,335
Operating Segments
Reportable segments reconciliations:
Segment operating income		34,436	36,286	28,156	35,161
Operating Segments | Marketing & Events Group
Reportable segments reconciliations:
Total revenue		285,428	286,569	521,564	543,497
Segment operating income		27,378	30,083	27,671	33,767
Restructuring charges			(383)	(293)	(471)
Operating Segments | Travel & Recreation Group
Reportable segments reconciliations:
Total revenue		40,483	30,466	45,709	37,934
Segment operating income		7,058	6,203	485	1,394
Restructuring charges		(1)	(148)	(93)	(142)
Operating Segments | Marketing & Events International Segment
Reportable segments reconciliations:
Restructuring charges		(956)	(133)	(1,171)	(271)
Intersegment Eliminations | Marketing & Events Group
Reportable segments reconciliations:
Total revenue		(7,332)	(7,903)	(9,014)	(9,154)
Corporate Eliminations
Reportable segments reconciliations:
Total revenue	[1]	(1,164)		(1,164)
Segment operating income	[1]	(422)		(422)
Corporate
Reportable segments reconciliations:
Segment operating income		(2,707)	(1,983)	(4,618)	(4,793)
Restructuring charges		(18)	(405)	(410)	(401)
U.S. Segment | Operating Segments | Marketing & Events Group
Reportable segments reconciliations:
Total revenue		220,078	208,749	403,815	401,692
Segment operating income		22,502	18,974	23,364	21,611
International Segment | Operating Segments | Marketing & Events Group
Reportable segments reconciliations:
Total revenue		72,682	85,723	126,763	150,959
Segment operating income		$ 4,876	$ 11,109	$ 4,307	$ 12,156

[1] Represents the elimination of intercompany revenue and profit realized by the Marketing & Events Group for work completed on renovations for the Travel & Recreation Group’s Banff Gondola.