Segment Information - Reconciliation of Income Statement Items from Reportable Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Total revenues	$ 201,842	$ 236,473	$ 249,314	$ 285,163	$ 202,552	$ 307,457	$ 246,450	$ 268,772	$ 972,792	$ 1,025,231	$ 942,364
Segment operating income (loss):
Segment operating income (loss), Total	(6,873)	16,463	8,941	11,301	(13,190)	31,538	7,633	1,531	39,136	32,454	17,694
Interest income									550	593	779
Interest expense									(1,234)	(1,303)	(1,511)
Restructuring charges	(1,684)	(714)	(773)	(720)	(1,431)	(608)	(678)	(2,225)	(3,891)	(4,942)	(3,782)
Impairment losses	0	(5,413)	0	0	0	0	0	0	(5,413)	0	0
Goodwill, Impairment Loss									4,461
Income from continuing operations before income taxes									29,148	26,802	13,180
Marketing & Events Group
Revenues:
Total revenues									844,904	902,040	840,550
Segment operating income (loss):
Segment operating income (loss), Total									20,092	17,900	5,180
Restructuring charges									409	(3,479)	(3,756)
Impairment losses									(658)
Marketing & Events International
Segment operating income (loss):
Restructuring charges									(2,362)	(1,373)	0
Impairment losses									(294)
Goodwill, Impairment Loss									0
Travel & Recreation Group
Revenues:
Total revenues									127,888	123,191	101,814
Segment operating income (loss):
Segment operating income (loss), Total									25,799	23,962	20,196
Restructuring charges									(907)	(79)	0
Impairment losses										0	0
Goodwill, Impairment Loss									4,461
Other Segments
Segment operating income (loss):
Segment operating income (loss), Total									45,891	41,862	25,376
Corporate
Segment operating income (loss):
Segment operating income (loss), Total									6,755	9,408	7,682
Restructuring charges									(1,031)	(11)	(26)
Intersegment Eliminations | Marketing & Events Group
Revenues:
Total revenues									(13,264)	(14,869)	(9,449)
U.S. | Marketing & Events Group
Revenues:
Total revenues									628,856	676,772	631,360
Segment operating income (loss):
Segment operating income (loss), Total									11,024	5,579	(6,269)
International | Marketing & Events Group
Revenues:
Total revenues									229,312	240,137	218,639
Segment operating income (loss):
Segment operating income (loss), Total									$ 9,068	$ 12,321	$ 11,449