Summary of Significant Accounting Policies (Details 3) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2012 segment	Dec. 31, 2011	Dec. 31, 2010
Summary of Significant Accounting Policies
Number of reportable segments		3
Goodwill Impairment
Goodwill		$ 7,467,000	$ 100,081,000	$ 100,081,000
Non-cash impairment charge of goodwill	92,600,000	92,614,000	0
Hospitality
Goodwill Impairment
Carrying value of segment	(85,700,000)
Goodwill	0	0	92,614,000	92,614,000
Non-cash impairment charge of goodwill	92,600,000	92,614,000
Advertising Services
Goodwill Impairment
Goodwill		7,467,000	7,467,000	7,467,000
Non-cash impairment charge of goodwill		$ 0