Restructuring Charges Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016
Pullmantur
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	$ 0
Accruals	2,655
Payments	2,655
Balance at the end of the period	0	$ 0
Cumulative Charges Incurred		2,655
Other restructuring
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0
Accruals	5,797
Payments	2,869
Balance at the end of the period	0	2,928
Cumulative Charges Incurred		5,797
Termination benefits | Pullmantur
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0
Accruals	2,587
Payments	2,587
Balance at the end of the period	0	0
Cumulative Charges Incurred		2,587
Termination benefits | Other restructuring
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0
Accruals	5,612
Payments	2,851
Balance at the end of the period	0	2,761
Cumulative Charges Incurred		5,612
Contract termination costs | Pullmantur
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0
Accruals	68
Payments	68
Balance at the end of the period	0	0
Cumulative Charges Incurred		68
Contract termination costs | Other restructuring
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0
Accruals	15
Payments	15
Balance at the end of the period	0	0
Cumulative Charges Incurred		15
Other restructuring | Pullmantur
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0
Accruals	0
Payments	0
Balance at the end of the period	0	0
Cumulative Charges Incurred		0
Other restructuring | Other restructuring
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0
Accruals	170
Payments	3
Balance at the end of the period	$ 0	167
Cumulative Charges Incurred		$ 170