Goodwill - Changes in carrying amount of goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Goodwill
Gross goodwill amount					$ 166,971
Accumulated impairment					(34,327)
Changes in the carrying amount of goodwill
Net goodwill amount			$ 132,644
Impairment	$ (5,698)	$ 0	(5,698)	$ 0
Foreign currency translation adjustment			(4,431)
At June 30, 2015	122,515		122,515
Operating Segments | Owned trains and cruises
Goodwill
Gross goodwill amount					7,873
Accumulated impairment					0
Changes in the carrying amount of goodwill
Net goodwill amount			7,873
Impairment			(662)
Foreign currency translation adjustment			19
At June 30, 2015	7,230		7,230
Operating Segments | Owned hotels - Europe | Total owned hotels
Goodwill
Gross goodwill amount					71,292
Accumulated impairment					(10,104)
Changes in the carrying amount of goodwill
Net goodwill amount			61,188
Impairment			0
Foreign currency translation adjustment			(3,514)
At June 30, 2015	57,674		57,674
Operating Segments | Owned hotels - North America | Total owned hotels
Goodwill
Gross goodwill amount					66,101
Accumulated impairment					(16,110)
Changes in the carrying amount of goodwill
Net goodwill amount			49,991
Impairment			0
Foreign currency translation adjustment			0
At June 30, 2015	49,991		49,991
Operating Segments | Owned hotels - Rest of world | Total owned hotels
Goodwill
Gross goodwill amount					21,705
Accumulated impairment					$ (8,113)
Changes in the carrying amount of goodwill
Net goodwill amount			13,592
Impairment			(5,036)
Foreign currency translation adjustment			(936)
At June 30, 2015	$ 7,620		$ 7,620