Acquisition of Businesses - Schedule of Recognized Assets Acquired and Liabilities Assumed (Details) $ in Thousands, € in Millions, £ in Millions	1 Months Ended						12 Months Ended
	Nov. 30, 2014 USD ($)	Nov. 30, 2014 EUR (€)	Oct. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2014 GBP (£)	Jul. 31, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Business Acquisition [Line Items]
Purchase price, net of cash acquired							$ 430	$ 120,251	$ 647
Excess purchase price over fair value of net assets acquired (“goodwill”)							$ 185,223	$ 194,197	$ 129,543
West Glacier, Apgar Village, and other operations
Business Acquisition [Line Items]
Cash						$ 16,544
Working capital adjustment						320
Purchase price, net of cash acquired						16,864
Inventory						1,374
Prepaid expenses						24
Property and equipment						14,510
Intangible assets						189
Total assets acquired						16,097
Accrued liabilities						35
Customer deposits						402
Other liabilities						64
Total liabilities acquired						501
Total fair value of net assets acquired						15,596
Excess purchase price over fair value of net assets acquired (“goodwill”)						$ 1,268
Blitz Communication Group Limited
Business Acquisition [Line Items]
Cash				$ 24,416	£ 15
Cash acquired				(190)
Purchase price, net of cash acquired				24,226
Accounts receivable				264
Inventory				433
Prepaid expenses				410
Property and equipment				5,951
Intangible assets				8,692
Total assets acquired				15,750
Accounts payable				1,232
Accrued liabilities				2,246
Customer deposits				199
Deferred tax liability				468
Revolving credit facility				488
Accrued dilapidations				417
Total liabilities acquired				5,050
Total fair value of net assets acquired				10,700
Excess purchase price over fair value of net assets acquired (“goodwill”)				$ 13,526
onPeak LLC
Business Acquisition [Line Items]
Cash			$ 42,950
Cash acquired			(4,064)
Purchase price, net of cash acquired			38,886
Accounts receivable			4,008
Prepaid expenses			640
Property and equipment			2,450
Other non-current assets			129
Intangible assets			14,100
Total assets acquired			21,327
Accounts payable			738
Accrued liabilities			3,341
Customer deposits			4,225
Deferred tax liability			3,028
Other liabilities			129
Total liabilities acquired			11,461
Total fair value of net assets acquired			9,866
Excess purchase price over fair value of net assets acquired (“goodwill”)			29,020
Travel Planners, Inc
Business Acquisition [Line Items]
Cash			33,674
Additional purchase price paid for tax election			896
Working capital adjustment			(279)
Cash acquired			(4,204)
Purchase price, net of cash acquired			30,087
Accounts receivable			1,450
Prepaid expenses			120
Property and equipment			93
Intangible assets			14,400
Total assets acquired			16,063
Accounts payable			488
Accrued liabilities			1,557
Customer deposits			4,525
Total liabilities acquired			6,570
Total fair value of net assets acquired			9,493
Excess purchase price over fair value of net assets acquired (“goodwill”)			$ 20,594
N200 Limited And Affiliates
Business Acquisition [Line Items]
Cash	$ 12,068	€ 9.7
Working capital adjustment	458
Contingent consideration	1,145
Cash acquired	(943)
Purchase price, net of cash acquired	12,728
Accounts receivable	1,732
Inventory	46
Prepaid expenses	115
Property and equipment	1,280
Intangible assets	3,682
Total assets acquired	6,855
Accounts payable	421
Accrued liabilities	1,057
Customer deposits	569
Deferred tax liability	986
Other liabilities	106
Total liabilities acquired	3,139
Total fair value of net assets acquired	3,716
Excess purchase price over fair value of net assets acquired (“goodwill”)	$ 9,012