Segment Information - Reconciliation of Assets From Reportable Segments (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Revenues:
Total revenues	$ 236,473,000	$ 307,457,000	$ 770,950,000	$ 822,679,000
Segment operating income (loss):
Corporate activities	(2,034,000)	(2,036,000)	(4,007,000)	(6,000,000)
Segment operating income (loss), Total	22,590,000	32,146,000	44,325,000	44,213,000
Interest income	122,000	153,000	397,000	445,000
Restructuring charges	(714,000)	(608,000)	(2,207,000)	(3,511,000)
Interest expense	(286,000)	(331,000)	(905,000)	(991,000)
Impairment losses			(5,413,000)
Income before income taxes	16,299,000	31,360,000	36,197,000	40,156,000
Assets	659,160,000		659,160,000		650,577,000
Marketing & Events Group [Member]
Revenues:
Total revenues	156,486,000	230,304,000	653,060,000	709,289,000
Segment operating income (loss):
Segment operating income (loss), Total	(7,904,000)	2,847,000	18,792,000	21,872,000
Restructuring charges	(185,000)	(392,000)	(309,000)	(2,879,000)
Impairment losses	(658,000)		(658,000)
Travel & Recreation Groups [Member]
Revenues:
Total revenues	79,987,000	77,153,000	117,890,000	113,390,000
Segment operating income (loss):
Segment operating income (loss), Total	32,528,000	31,335,000	29,540,000	28,341,000
Restructuring charges	(77,000)		(90,000)
Impairment losses	(4,461,000)		(4,461,000)
Assets	247,948,000		247,948,000		223,199,000
Corporate and Other [Member]
Segment operating income (loss):
Restructuring charges	(18,000)		(47,000)	(13,000)
Assets	111,380,000		111,380,000		123,846,000
Intersegment Eliminations [Member]
Revenues:
Total revenues	(4,352,000)	(5,871,000)	(10,269,000)	(11,669,000)
Other Segments [Member]
Segment operating income (loss):
Segment operating income (loss), Total	24,624,000	34,182,000	48,332,000	50,213,000
Marketing & Events International [Member]
Segment operating income (loss):
Restructuring charges	(434,000)	(216,000)	(1,761,000)	(619,000)
Impairment losses	(294,000)		(294,000)
U.S. [Member]
Revenues:
Total revenues	120,503,000	168,395,000	494,355,000	540,741,000
Segment operating income (loss):
Segment operating income (loss), Total	(3,745,000)	(585,000)	12,971,000	12,235,000
U.S. [Member] | Marketing & Events Group [Member]
Segment operating income (loss):
Assets	210,836,000		210,836,000		203,145,000
International [Member]
Revenues:
Total revenues	40,335,000	67,780,000	168,974,000	180,217,000
Segment operating income (loss):
Segment operating income (loss), Total	(4,159,000)	3,432,000	5,821,000	9,637,000
International [Member] | Marketing & Events Group [Member]
Segment operating income (loss):
Assets	$ 88,996,000		$ 88,996,000		$ 100,387,000