Goodwill and Other Intangible Assets - Summary of Changes in the Carrying Amount of Goodwill (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Goodwill [Line Items]
Goodwill, Beginning Balance			$ 137,820,000
Goodwill impairment loss	(4,461,000)		(4,461,000)
Business acquisition			158,000
Foreign currency translation adjustments			(2,518,000)
Goodwill, Ending balance	130,999,000		130,999,000
Marketing & Events U.S. [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance			62,686,000
Goodwill impairment loss
Business acquisition
Foreign currency translation adjustments
Goodwill, Ending balance	62,686,000		62,686,000
Marketing & Events International [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance			23,054,000
Goodwill impairment loss
Business acquisition			158,000
Foreign currency translation adjustments			(622,000)
Goodwill, Ending balance	22,590,000		22,590,000
Travel & Recreation Group [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance			52,080,000
Goodwill impairment loss			(4,461,000)
Business acquisition
Foreign currency translation adjustments			(1,896,000)
Goodwill, Ending balance	$ 45,723,000		$ 45,723,000