Long-Term Debt - 2013 Credit Facility - Additional Information (Detail) - USD ($) $ in Thousands					12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 30, 2014	Aug. 02, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	May 31, 2013
Debt Instrument [Line Items]
Gain (loss) on debt extinguishment					$ (161)	$ (204)	$ (246)
Term Loan B Facility
Debt Instrument [Line Items]
Gain (loss) on debt extinguishment					$ (29,700)
Repayment of loans	$ 20,000	$ 20,000	$ 20,000
2013 Credit Facility
Debt Instrument [Line Items]
Effective interest rate								3.50%
Interest rate on borrowings under 2013 Credit Facility					if a Base Rate Loan, one and one half percent (1.50%) per annum and (B) if a LIBOR Rate Loan, two and one half percent (2.50%) per annum;
Percentage of repricing fee					1.00%
Certain customary events of default, number of business days to default in the payment of interest on borrowings					3 days
Certain customary events of default, number of days default continue for compliance with other agreement					30 days
Certain customary events of default, number of days default continue for financial statement delivery obligations					10 days
Certain customary events of default, indebtedness aggregate amount					$ 15,000
Certain customary events of default, failure in payment of final judgments aggregate amount					$ 15,000
Certain customary events of default, failure in payment of final judgments aggregate amount period					30 days
2013 Credit Facility | Base Rate Margin
Debt Instrument [Line Items]
Variable interest rate basis spread on debt					1.50%
2013 Credit Facility | LIBOR Margin
Debt Instrument [Line Items]
Variable interest rate basis spread on debt					2.50%
2013 Credit Facility | Term Loan A
Debt Instrument [Line Items]
Senior Secured debt									$ 20,000
Maturity date of revolving credit facility					Aug. 01, 2013
2013 Credit Facility | Term Loan B Facility
Debt Instrument [Line Items]
Senior Secured debt									375,000
Maturity date of revolving credit facility					May 31, 2020
Period considered for applicability of repricing fees					6 months
Principal amount repurchased				$ 324,000
Redemption price on principal amount with net proceeds, accrued and unpaid expense				106.563%
Carrying value of term loan	292,800				$ 292,800
Estimated fair value of term loan	$ 292,800				$ 292,800
2013 Credit Facility | Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Senior Secured debt									30,000
Maturity date of revolving credit facility					May 31, 2018
2013 Credit Facility | Term Loan And Revolving Credit Facility
Debt Instrument [Line Items]
Additional borrowing capacity									$ 100,000
2013 Credit Facility | Term Loan
Debt Instrument [Line Items]
Interest rate on borrowings under 2013 Credit Facility					if a Base Rate Loan, one and one half percent (1.50%) per annum and (ii) if a LIBOR Rate Loan, two and one half percent (2.50%) per annum;
2013 Credit Facility | Term Loan | Base Rate Margin
Debt Instrument [Line Items]
Variable interest rate basis spread on debt					1.50%
2013 Credit Facility | Term Loan | LIBOR Margin
Debt Instrument [Line Items]
Variable interest rate basis spread on debt					2.50%