Acquisition of Businesses - Schedule of Recognized Assets Acquired and Liabilities Assumed (Details) CAD in Millions							12 Months Ended
	Dec. 29, 2016 USD ($)	Dec. 29, 2016 CAD	Aug. 11, 2016 USD ($)	Mar. 11, 2016 USD ($)	Jan. 04, 2016 USD ($)	Jan. 04, 2016 CAD	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Total purchase price, net of cash acquired							$ 1,501,000	$ 195,989,000	$ 430,000
Excess purchase price over fair value of net assets acquired (“goodwill”)							$ 270,551,000	$ 254,022,000	$ 185,223,000
Maligne Tours Ltd
Business Acquisition [Line Items]
Cash					$ 14,962,000	CAD 20.9
Total purchase price, net of cash acquired					14,962,000
Inventories					246,000
Prepaid expenses					2,000
Property and equipment					4,133,000
Intangible assets					9,244,000
Total assets acquired					13,625,000
Customer deposits					15,000
Other liabilities					240,000
Total liabilities acquired					255,000
Total fair value of net assets acquired					13,370,000
Excess purchase price over fair value of net assets acquired (“goodwill”)					$ 1,592,000
CATC Alaska Tourism Corporation
Business Acquisition [Line Items]
Cash				$ 45,000,000
Working capital adjustment				(35,000)
Cash acquired				(2,196,000)
Total purchase price, net of cash acquired				42,769,000
Accounts receivable				8,000
Inventories				921,000
Prepaid expenses				82,000
Property and equipment				43,470,000
Intangible assets				980,000
Total assets acquired				45,461,000
Accounts payable				306,000
Accrued liabilities				434,000
Customer deposits				1,952,000
Total liabilities acquired				2,692,000
Total fair value of net assets acquired				$ 42,769,000
ON Event Services LLC
Business Acquisition [Line Items]
Cash			$ 87,000,000
Working capital adjustment			344,000
Contingent consideration			540,000
Total purchase price, net of cash acquired			87,884,000
Accounts receivable			4,643,000
Inventories			256,000
Prepaid expenses			872,000
Property and equipment			14,827,000
Intangible assets			33,990,000
Total assets acquired			54,588,000
Accounts payable			992,000
Accrued liabilities			564,000
Customer deposits			851,000
Other liabilities			274,000
Total liabilities acquired			2,681,000
Total fair value of net assets acquired			51,907,000
Excess purchase price over fair value of net assets acquired (“goodwill”)			$ 35,977,000
FlyOver Canada
Business Acquisition [Line Items]
Cash	$ 50,920,000	CAD 68.8
Cash acquired	(6,000)
Total purchase price, net of cash acquired	50,914,000
Inventories	11,000
Prepaid expenses	37,000
Property and equipment	10,867,000
Intangible assets	6,028,000
Total assets acquired	16,943,000
Accrued liabilities	118,000
Total liabilities acquired	118,000
Total fair value of net assets acquired	16,825,000
Excess purchase price over fair value of net assets acquired (“goodwill”)	$ 34,089,000