Acquisition of Businesses (Details Textual) (USD $)	12 Months Ended									9 Months Ended			9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Denali [Member]	Sep. 16, 2011 Denali [Member] GuestCabins Room	Dec. 31, 2011 St. Mary [Member]	Jun. 29, 2011 St. Mary [Member] Room	Dec. 31, 2011 Grouse Mountain Lodge [Member]	Jan. 05, 2011 Grouse Mountain Lodge [Member]	Sep. 30, 2012 Banff International Hotel [Member]	Mar. 07, 2012 Banff International Hotel [Member] Room	Mar. 07, 2012 Banff International Hotel [Member] Leasehold Land Interests [Member]	Sep. 30, 2012 Denali Grouse and St Marry [Member]
Business Acquisition (Textual) [Abstract]
Acquisition					$ 15,300,000		$ 15,300,000		$ 10,500,000		$ 23,556,000
Number of rooms in hotel					42		115				162
Number of guest cabins					46
Property and equipment including leasehold interest												7,900,000
Goodwill											1,890,000
Other intangible assets											1,323,000
Goodwill deductible for tax purposes													15 years
Weighted-average amortization period related to the other intangible assets	4 years 9 months 18 days									7 years 8 months 12 days
Goodwill	137,820,000	133,694,000	127,441,000	3,200,000		3,100,000		1,300,000
Other intangible assets, Business acquisition				$ 626,000,000		$ 60,000,000		$ 4,000,000,000