Acquisition of Businesses - Schedule of Recognized Assets Acquired and Liabilities Assumed (Details) $ in Thousands, CAD in Millions			9 Months Ended
	Dec. 29, 2016 USD ($)	Dec. 29, 2016 CAD	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Purchase price, net of cash acquired			$ 1,661	$ 145,735
Excess purchase price over fair value of net assets acquired (“goodwill”)			$ 263,919		$ 254,022
FlyOver Canada
Business Acquisition [Line Items]
Cash	$ 50,920	CAD 68.8
Cash acquired	(6)
Purchase price, net of cash acquired	50,914
Inventories	11
Prepaid expenses	37
Property and equipment	10,867
Intangible assets	6,028
Total assets acquired	16,943
Accrued liabilities	118
Total liabilities assumed	118
Total fair value of net assets acquired	16,825
Excess purchase price over fair value of net assets acquired (“goodwill”)	$ 34,089