Restructuring (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring
Reduction in workforce (as a percent)	11.00%
Liabilities associated with restructuring activities
Balance at the beginning of the period	$ 80,000	$ 172,000	$ 758,000
Charges to expense	7,570,000	1,923,000	421,000
Cash payments/utilization	(5,911,000)	(2,015,000)	(1,007,000)
Balance at the end of the period	1,739,000	80,000	172,000
Minimum
Restructuring
Estimated term to charge additional restructuring expenses	12 months
Estimated additional restructuring expenses	500,000
Maximum
Restructuring
Estimated term to charge additional restructuring expenses	18 months
Estimated additional restructuring expenses	1,500,000
Severance and other benefit related costs
Restructuring
Restructuring cost incurred		1,857,000	327,000
Liabilities associated with restructuring activities
Balance at the beginning of the period	40,000	35,000	336,000
Charges to expense	7,127,000	1,857,000	327,000
Cash payments/utilization	(5,616,000)	(1,852,000)	(628,000)
Balance at the end of the period	1,551,000	40,000	35,000
Severance and other benefit related costs | Hospitality and Advertising Services
Restructuring
Restructuring cost incurred	7,127,000
Cost of closing redundant acquired facilities
Restructuring
Restructuring cost incurred		86,000	61,000
Reduction in restructuring expense related to post acquisition activities		20,000	(33,000)
Liabilities associated with restructuring activities
Balance at the beginning of the period	40,000	137,000	422,000
Charges to expense	305,000	66,000	94,000
Cash payments/utilization	(157,000)	(163,000)	(379,000)
Balance at the end of the period	188,000	40,000	137,000
Cost of closing redundant acquired facilities | Hospitality and Advertising Services
Restructuring
Restructuring cost incurred	305,000
Asset impairment
Liabilities associated with restructuring activities
Charges to expense	138,000
Cash payments/utilization	(138,000)
Asset impairment | Hospitality and Advertising Services
Restructuring
Restructuring cost incurred	$ 138,000