Goodwill and Other Intangible Assets - Summary of Goodwill Balances by Component and Segment (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Balance at December 31, 2013		$ 194,197	$ 129,543
Business acquisitions		2,157
Foreign currency translation adjustments		(10,558)	(6,613)
Disposals	[1]	(573)
Balance at December 31, 2014		185,223	194,197
Marketing & Events U.S. Segment
Goodwill [Line Items]
Balance at December 31, 2013		110,618	62,686
Business acquisitions		1,682
Foreign currency translation adjustments		0	0
Disposals	[1]	0
Balance at December 31, 2014		112,300	110,618
Marketing & Events International Segment
Goodwill [Line Items]
Balance at December 31, 2013		42,221	22,611
Business acquisitions		475
Foreign currency translation adjustments		(3,488)	(2,457)
Disposals	[1]	(573)
Balance at December 31, 2014		38,635	42,221
Travel & Recreation Group
Goodwill [Line Items]
Balance at December 31, 2013		41,358	44,246
Business acquisitions		0
Foreign currency translation adjustments		(7,070)	(4,156)
Disposals	[1]	0
Balance at December 31, 2014		$ 34,288	41,358
Blitz Communication Group Limited
Goodwill [Line Items]
Business acquisitions			13,504
Blitz Communication Group Limited | Marketing & Events U.S. Segment
Goodwill [Line Items]
Business acquisitions			0
Blitz Communication Group Limited | Marketing & Events International Segment
Goodwill [Line Items]
Business acquisitions			13,504
Blitz Communication Group Limited | Travel & Recreation Group
Goodwill [Line Items]
Business acquisitions			0
West Glacier Motel and Cabins
Goodwill [Line Items]
Business acquisitions			1,268
West Glacier Motel and Cabins | Marketing & Events U.S. Segment
Goodwill [Line Items]
Business acquisitions			0
West Glacier Motel and Cabins | Marketing & Events International Segment
Goodwill [Line Items]
Business acquisitions			0
West Glacier Motel and Cabins | Travel & Recreation Group
Goodwill [Line Items]
Business acquisitions			1,268
onPeak LLC
Goodwill [Line Items]
Business acquisitions			27,406
onPeak LLC | Marketing & Events U.S. Segment
Goodwill [Line Items]
Business acquisitions			27,406
onPeak LLC | Marketing & Events International Segment
Goodwill [Line Items]
Business acquisitions			0
onPeak LLC | Travel & Recreation Group
Goodwill [Line Items]
Business acquisitions			0
Travel Planners, Inc
Goodwill [Line Items]
Business acquisitions			20,526
Travel Planners, Inc | Marketing & Events U.S. Segment
Goodwill [Line Items]
Business acquisitions			20,526
Travel Planners, Inc | Marketing & Events International Segment
Goodwill [Line Items]
Business acquisitions			0
Travel Planners, Inc | Travel & Recreation Group
Goodwill [Line Items]
Business acquisitions			0
N200 Limited And Affiliates
Goodwill [Line Items]
Business acquisitions			8,563
N200 Limited And Affiliates | Marketing & Events U.S. Segment
Goodwill [Line Items]
Business acquisitions			0
N200 Limited And Affiliates | Marketing & Events International Segment
Goodwill [Line Items]
Business acquisitions			8,563
N200 Limited And Affiliates | Travel & Recreation Group
Goodwill [Line Items]
Business acquisitions			$ 0

[1] (1) During 2015, the Company partially disposed of certain operations associated with a venue services contract within the Marketing & Events International Segment. Accordingly, goodwill of $0.6 million was included in the carrying amount of those operations, and a loss of $23,000 was recorded in income from continuing operations related to the disposal.