Segment Information - Reconciliation of Income Statement Items from Reportable Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Total revenues	$ 285,641	$ 285,159
Segment operating income (loss):
Segment operating income (loss), Total	11,322	12,789
Interest income	65	138
Interest expense	(298)	(296)
Restructuring charges	(211)	(720)
Income from continuing operations before income taxes	10,878	11,911
Marketing & Events Group
Revenues:
Total revenues	277,823	276,761
Segment operating income (loss):
Segment operating income (loss), Total	18,170	18,507
Restructuring charges	38	194
Marketing & Events International
Segment operating income (loss):
Restructuring charges	(530)	(901)
Travel & Recreation Group
Revenues:
Total revenues	7,818	8,398
Segment operating income (loss):
Segment operating income (loss), Total	(4,809)	(4,912)
Restructuring charges	206	(13)
Other Segments
Segment operating income (loss):
Segment operating income (loss), Total	13,361	13,595
Corporate
Segment operating income (loss):
Segment operating income (loss), Total	2,039	806
Restructuring charges	75	0
Intersegment Eliminations | Marketing & Events Group
Revenues:
Total revenues	(2,290)	(1,628)
U.S. | Marketing & Events Group
Revenues:
Total revenues	221,395	218,341
Segment operating income (loss):
Segment operating income (loss), Total	15,851	14,115
International | Marketing & Events Group
Revenues:
Total revenues	58,718	60,048
Segment operating income (loss):
Segment operating income (loss), Total	$ 2,319	$ 4,392