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Goodwill and Other Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 3 Months Ended
Mar. 31, 2013
Mar. 31, 2013
Marketing & Events U.S [Member]
Dec. 31, 2012
Marketing & Events U.S [Member]
Mar. 31, 2013
Marketing & Events International [Member]
Mar. 31, 2013
Travel & Recreation Group [Member]
Changes in the carrying amount of goodwill          
Goodwill, Beginning Balance $ 137,820 $ 62,686 $ 62,686 $ 23,054 $ 52,080
Business acquisition 158     158  
Foreign currency translation adjustments (2,567)     (1,374) (1,193)
Goodwill, Ending balance $ 135,411 $ 62,686 $ 62,686 $ 21,838 $ 50,887