Acquisition of Businesses - Schedule of Recognized Assets Acquired and Liabilities Assumed (Details) In Thousands, unless otherwise specified	3 Months Ended			0 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2014 USD ($)	Nov. 24, 2014 N200 Limited and Affiliates USD ($)	Nov. 24, 2014 N200 Limited and Affiliates EUR (€)	Oct. 07, 2014 Travel Planners, Inc USD ($)	Oct. 07, 2014 onPeak LLC USD ($)	Jul. 01, 2014 West Glacier, Apgar Village, and other operations USD ($)	Sep. 16, 2014 Blitz Communication Group Limited USD ($)	Sep. 16, 2014 Blitz Communication Group Limited GBP (£)
Business Acquisition [Line Items]
Purchase price				$ 12,068	€ 9,700	$ 33,674	$ 42,950	$ 16,500	$ 24,416	£ 15,000
Additional purchase price payable upon tax election						1,300
Cash acquired				(943)		(4,204)	(4,064)		(190)
Working capital adjustment				458		(279)
Contingent consideration				1,145
Purchase price, net of cash acquired	(279)	0		12,728		30,491	38,886		24,226
Accounts receivable, net				1,732		1,450	4,008		264
Inventory				46					433
Prepaid expenses				115		120	640		410
Property and equipment, net				1,280		93	2,450		5,951
Other non-current assets							309
Intangible assets				3,682		14,400	14,100		8,692
Total assets acquired				6,855		16,063	21,507		15,750
Accounts payable				421		488	738		1,232
Accrued liabilities				1,057		1,557	3,341		2,246
Customer deposits				569		4,525	4,225		199
Deferred tax liability				911			1,576		282
Revolving credit facility									488
Accrued dilapidations									417
Other liabilities				(106)		(128)	(309)
Total liabilities acquired				(3,064)		(6,698)	(10,189)		(4,864)
Total fair value of net assets acquired				3,791		9,365	11,318		10,886
Excess purchase price over fair value of net assets acquired (“goodwill”)	$ 188,638		$ 194,197	$ 8,937		$ 21,126	$ 27,568		$ 13,340