Acquisition of Businesses - Schedule of Recognized Assets Acquired and Liabilities Assumed (Details) In Thousands, unless otherwise specified	12 Months Ended			0 Months Ended								0 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Nov. 24, 2014 N200 Limited and Affiliates USD ($)	Nov. 24, 2014 N200 Limited and Affiliates EUR (€)	Sep. 16, 2014 N200 Limited and Affiliates USD ($)	Sep. 16, 2014 N200 Limited and Affiliates GBP (£)	Oct. 07, 2014 Travel Planners, Inc USD ($)	Oct. 07, 2014 onPeak LLC USD ($)	Jul. 01, 2014 West Glacier Motel and Cabins, Apgar Village Lodge, and Other Operations USD ($)	Jul. 02, 2014 West Glacier Motel and Cabins, Apgar Village Lodge, and Other Operations USD ($)	Sep. 16, 2014 Blitz Communication Group Limited USD ($)	Sep. 16, 2014 Blitz Communication Group Limited GBP (£)
Business Acquisition [Line Items]
Cash				$ 12,068	€ 9,700	$ 12,100	£ 9,700	$ 33,674	$ 42,950	$ 16,544		$ 24,416	£ 15,000
Additional purchase price payable upon tax election								1,300
Cash acquired				(943)				(4,204)	(4,064)			(190)
Working capital adjustment				1,244				(279)		320
Total purchase price	120,251	647	23,546	12,369				30,491	38,886	16,864		24,226
Accounts receivable, net				1,747				1,450	4,008			264
Inventory				46							1,374	433
Prepaid expenses				115				120	640		24	410
Property and equipment, net				1,280				93	2,450		14,510	5,902
Other non-current assets									309
Intangible assets				3,595				15,000	14,300		189	8,708
Total assets acquired				6,783				16,663	21,707		16,097	15,717
Accounts payable				421				488	738			1,232
Accrued liabilities				990				1,557	3,341		35	2,246
Customer deposits				569				4,525	4,225		402	199
Deferred tax liability				891					1,614			241
Revolving credit facility												488
Accrued dilapidations												589
Other liabilities				(106)				(128)	(309)		(64)
Total liabilities acquired				(2,977)				(6,698)	(10,227)		(501)	(4,995)
Total fair value of net assets acquired				3,806				9,965	11,480		15,596	10,722
Excess purchase price over fair value of net assets acquired (“goodwill”)	$ 194,197	$ 129,543	$ 137,820	$ 8,563				$ 20,526	$ 27,406		$ 1,268	$ 13,504