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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, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reportable segments reconciliations:
Total revenues	$ 223,155us-gaap_SalesRevenueNet	$ 299,802us-gaap_SalesRevenueNet	$ 256,391us-gaap_SalesRevenueNet	$ 285,641us-gaap_SalesRevenueNet	$ 201,842us-gaap_SalesRevenueNet	$ 220,167us-gaap_SalesRevenueNet	$ 246,180us-gaap_SalesRevenueNet	$ 285,159us-gaap_SalesRevenueNet	$ 1,064,987us-gaap_SalesRevenueNet	$ 953,347us-gaap_SalesRevenueNet	$ 1,006,644us-gaap_SalesRevenueNet
Segment operating income (loss), Total	(7,317)us-gaap_OperatingIncomeLoss	29,311us-gaap_OperatingIncomeLoss	9,892us-gaap_OperatingIncomeLoss	11,111us-gaap_OperatingIncomeLoss	(6,271)us-gaap_OperatingIncomeLoss	13,001us-gaap_OperatingIncomeLoss	9,515us-gaap_OperatingIncomeLoss	12,069us-gaap_OperatingIncomeLoss	45,518us-gaap_OperatingIncomeLoss	35,156us-gaap_OperatingIncomeLoss	28,783us-gaap_OperatingIncomeLoss
Interest income									305us-gaap_InvestmentIncomeInterest	550us-gaap_InvestmentIncomeInterest	593us-gaap_InvestmentIncomeInterest
Interest expense									(2,015)us-gaap_InterestExpense	(1,234)us-gaap_InterestExpense	(1,303)us-gaap_InterestExpense
Restructuring (charges) recoveries	177us-gaap_RestructuringCharges	(234)us-gaap_RestructuringCharges	(1,369)us-gaap_RestructuringCharges	(211)us-gaap_RestructuringCharges	(1,661)us-gaap_RestructuringCharges	(639)us-gaap_RestructuringCharges	(773)us-gaap_RestructuringCharges	(720)us-gaap_RestructuringCharges	(1,637)us-gaap_RestructuringCharges	(3,793)us-gaap_RestructuringCharges	(4,942)us-gaap_RestructuringCharges
Impairment losses	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	(884)us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	(3,049)us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	(884)us-gaap_AssetImpairmentCharges	(3,049)us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges
Income from continuing operations before income taxes									41,287	27,630	23,131
Marketing & Events Group
Reportable segments reconciliations:
Total revenues									944,468	844,904	902,040
Segment operating income (loss), Total									31,739	20,092	17,900
Restructuring (charges) recoveries									278	409	(3,479)
Impairment losses									0	(658)	0
Marketing & Events International
Reportable segments reconciliations:
Restructuring (charges) recoveries									(1,808)	(2,362)	(1,373)
Impairment losses									(884)	(294)	0
Travel & Recreation Group
Reportable segments reconciliations:
Total revenues									120,519	108,443	104,604
Segment operating income (loss), Total									28,127	21,819	20,291
Restructuring (charges) recoveries									41	(809)	(79)
Impairment losses									0	(2,097)	0
Other Segments
Reportable segments reconciliations:
Segment operating income (loss), Total									59,866	41,911	38,191
Corporate
Reportable segments reconciliations:
Segment operating income (loss), Total									(14,348)	(6,755)	(9,408)
Restructuring (charges) recoveries									(148)	(1,031)	(11)
Intersegment Eliminations \| Marketing & Events Group
Reportable segments reconciliations:
Total revenues									(16,016)	(13,264)	(14,869)
U.S. \| Marketing & Events Group
Reportable segments reconciliations:
Total revenues									710,835	628,856	676,772
Segment operating income (loss), Total									21,400	11,024	5,579
International \| Marketing & Events Group
Reportable segments reconciliations:
Total revenues									249,649	229,312	240,137
Segment operating income (loss), Total									$ 10,339	$ 9,068	$ 12,321