Debt and Capital Lease Obligations - Narrative (Details) - USD ($)					9 Months Ended
		Oct. 24, 2018	Dec. 06, 2016	Dec. 22, 2014	Sep. 30, 2018	Sep. 30, 2017	May 18, 2018	Dec. 31, 2017	Dec. 28, 2016
Line of Credit Facility [Line Items]
Leverage ratio					161.00%
Fixed charge coverage ratio					271.00%
Percentage of non equity ownership related redeemable noncontrolling interests					54.50%
Total debt and capital lease obligations					$ 200,174,000			$ 209,192,000
Revolving credit facility, balance outstanding	[1]				188,704,000			207,322,000
Capital lease obligations, total					4,303,000			2,854,000
Letters of credit outstanding					3,600,000
Unamortized debt issuance cost					583,000			984,000
Fair value of debt					195,300,000			$ 203,200,000
Cash paid for interest on debt					6,200,000	$ 5,500,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility, balance outstanding					$ 123,100,000
Brewster Revolver
Line of Credit Facility [Line Items]
Borrowing capacity on line of credit			$ 20,000,000				$ 30,000,000		$ 38,000,000
Maturity date			Dec. 28, 2018
Commitment fee percentage on line of credit					0.25%
Revolving credit facility, balance outstanding	[1]				$ 7,750,000
Remaining borrowing capacity on line of credit					22,200,000
Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Maturity date				Dec. 22, 2019
Remaining borrowing capacity on line of credit					$ 48,300,000
Amended and Restated Credit Agreement | Senior Credit Facility
Line of Credit Facility [Line Items]
Borrowing capacity on line of credit				$ 300,000,000
Amended and Restated Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowing capacity on line of credit				175,000,000
Commitment fee percentage on line of credit					0.35%
Revolving credit facility, balance outstanding					$ 123,100,000
Amended and Restated Credit Agreement | Term Loan
Line of Credit Facility [Line Items]
Borrowing capacity on line of credit				$ 125,000,000
Revolving credit facility, balance outstanding					$ 65,600,000
Amendment No. 1 | Maximum
Line of Credit Facility [Line Items]
Leverage ratio					350.00%
Amendment No. 1 | Minimum
Line of Credit Facility [Line Items]
Fixed charge coverage ratio					175.00%
2018 Credit Agreement | Subsequent Event
Line of Credit Facility [Line Items]
Maturity date		Oct. 24, 2023
Financial covenants leverage ratio step up		400.00%
Minimum amount for material acquisition		$ 50,000,000
Annual share repurchase and dividends limit on leverage ratio basis		$ 20,000,000
Leverage ratio required for dividend or share activity		275.00%
Maximum additional dividends amount permitted to distribute		$ 15,000,000
2018 Credit Agreement | Subsequent Event | Top Tier Foreign Subsidiaries
Line of Credit Facility [Line Items]
Percent of lenders security interest on capital stock foreign subsidiary		65.00%
2018 Credit Agreement | Subsequent Event | Esja Attractions ehf.
Line of Credit Facility [Line Items]
Percentage of non equity ownership related redeemable noncontrolling interests		54.50%
2018 Credit Agreement | Minimum | Subsequent Event
Line of Credit Facility [Line Items]
Leverage ratio		350.00%
Interest coverage ratio		300.00%
2018 Credit Agreement | Senior Credit Facility | Subsequent Event
Line of Credit Facility [Line Items]
Borrowing capacity on line of credit		$ 450,000,000
2018 Credit Agreement | Revolving Credit Facility | Subsequent Event
Line of Credit Facility [Line Items]
Borrowing capacity on line of credit		450,000,000
Additional borrowing capacity on line of credit		250,000,000
Line of Credit borrowings used to support letter of credit		$ 20,000,000

[1] Represents the weighted-average interest rate in effect at the respective periods for the revolving credit facilities and term loan borrowings, including any applicable margin. The interest rates do not include amortization of debt issuance costs or commitment fees.