Long-Term Debt - Additional Information (Detail)			1 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($)	Feb. 16, 2016 USD ($)	Jul. 31, 2017 USD ($) Installment	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)
Line of Credit Facility [Line Items]
Letters of credit outstanding				$ 200,000
Face value of debt				224,433,000	$ 264,000,000
Scheduled debt repayments					2,000,000
Wrote-off lenders fees and discount relating to term-loan portion				$ 20,340,000	20,263,000	$ 11,775,000
Minimum percentage of revolving credit facility as per financial covenant				20.00%
LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR				5.75%
LIBOR [Member] | Repricing Amendment [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR				4.75%
Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR				4.75%
Base Rate [Member] | Repricing Amendment [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR				3.75%
Financing Arrangement [Member]
Line of Credit Facility [Line Items]
Face value of debt			$ 590,000	$ 458,000
Debt Instrument, Interest Rate, Stated Percentage			6.00%
Debt Instrument, Number of installments | Installment			24
Debt Instrument, Installment Amount			$ 26,000
Credit Agreements [Member]
Line of Credit Facility [Line Items]
Face value of debt					270,000,000
Term Notes Payable [Member]
Line of Credit Facility [Line Items]
Face value of debt				$ 224,000,000
Senior Secured Credit Facilities [Member]
Line of Credit Facility [Line Items]
Amount available under credit facility		$ 310,000,000
Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Amount available under credit facility		$ 270,000,000
Maturity term of credit agreement		6 years
Credit facility amortization percentage		1.00%
Maturity date of credit agreement				2022-02
Term Loan Facility [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR				1.00%
Term Loan Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR				2.00%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Amount available under credit facility		$ 40,000,000
Credit facility amortization percentage				0.50%
Credit available on revolver				$ 39,800,000
Maturity date of credit agreement				2021-02
Letter Of Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility amortization percentage				5.75%
Facing fee per annum				0.125%
2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Accrued interest				$ 1,000,000
Voluntary prepayment of debt	$ 4,000,000			40,000,000
2016 Credit Agreement [Member] | February 2016 Refinancing [Member]
Line of Credit Facility [Line Items]
Third-party fees and costs					1,500,000
Additional lender fees and discount					14,600,000
2016 Credit Agreement [Member] | Lenders Fees and Discount [Member]
Line of Credit Facility [Line Items]
Wrote-off lenders fees and discount relating to term-loan portion				$ 1,900,000	$ 200,000