Goodwill and Other Intangible Assets - Goodwill by Reporting Unit and Segment (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Goodwill by reporting unit and segment
Goodwill	$ 140,661	$ 129,543
Marketing & Events U.S.
Goodwill by reporting unit and segment
Goodwill	62,686	62,686
Marketing & Events International
Goodwill by reporting unit and segment
Goodwill	34,939	22,611
Marketing & Events International | United Kingdom (Melville GES)
Goodwill by reporting unit and segment
Goodwill	26,816	14,049
Marketing & Events International | GES Canada
Goodwill by reporting unit and segment
Goodwill	8,123	8,562
Marketing and Events Group
Goodwill by reporting unit and segment
Goodwill	97,625	85,297
Travel & Recreation Group
Goodwill by reporting unit and segment
Goodwill	43,036	44,246
Travel & Recreation Group | Brewster
Goodwill by reporting unit and segment
Goodwill	38,584	41,062
Travel & Recreation Group | Glacier Park
Goodwill by reporting unit and segment
Goodwill	1,268	0
Travel & Recreation Group | Alaska Denali Travel
Goodwill by reporting unit and segment
Goodwill	$ 3,184	$ 3,184