Property and Equipment - Additional Information (Details) (USD $)	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
Acquired Indefinite-lived Intangible Assets [Line Items]
Proceeds from Sale of Property Held-for-sale									$ 12,696,000	$ 0	$ 0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property									4,775,000	0	0
Net carrying amount of capitalized software	13,900,000				14,200,000				13,900,000	14,200,000
Leasehold interests	457,944,000				473,865,000				457,944,000	473,865,000
Depreciation expense									27,400,000	30,000,000	28,400,000
Asset Impairment Charges	0	5,413,000	0	0	0	0	0	0	5,413,000	0	0
Leasehold Land Interests
Acquired Indefinite-lived Intangible Assets [Line Items]
Leasehold interests	10,000,000				10,600,000				10,000,000	10,600,000
Marketing and Events Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Asset Impairment Charges									$ 952,000