Fair Value Measurements and Derivative Financial Instruments - Additional Information (Detail) - USD ($)				9 Months Ended
	Nov. 27, 2015	Feb. 02, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Jan. 29, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate of convertible notes				6.25%
Long-term obligations				$ 179,654,000			$ 188,689,000
LIBOR spread				4.75%
Commencing swap date				Jun. 30, 2012
Expiration Date				Sep. 30, 2015
Change in fair value credited to interest expense					$ 820,000
Notional amounts of floating-to-fixed interest rate swaps, one				$ 115,500,000
Notional amounts of floating-to-fixed interest rate swaps, two				$ 77,000,000
Interest rate of floating-to-fixed interest rate swaps, one				7.22%
Interest rate of floating-to-fixed interest rate swaps, two				7.225%
Notional amounts of floating-to-fixed interest rate swaps, over-hedged		$ 110,268,000
Notional amounts of floating-to-fixed interest rate swaps, over-hedged percentage		95.50%
Estimated Value [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term obligations				$ 90,335,000
2010 Senior Credit Facility Term Loan Due 2016 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amount of Senior Credit Facility to be paid related to sale			$ 240,472,000
2015 Senior Credit Facilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term obligations				$ 91,140,000			93,746,000
6.25% Convertible Notes Due 2018 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate of convertible notes				6.25%		6.25%
Long-term obligations				$ 91,247,000
Estimated carrying value of notes							99,359,000
Estimated fair value of notes							$ 97,769,000
2015 Senior Secured Credit Facilities Due 2018 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amounts of floating-to-fixed interest rate swaps	$ 44,827,000
Interest rate of floating-to-fixed interest rate swaps	5.833%
LIBOR spread	4.50%
Commencing swap date	Dec. 18, 2015
Expiration Date	Dec. 31, 2017
Change in fair value credited to interest expense	$ 83,000