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Long-Term Debt and Other Liabilities - Additional Information (Detail) $ / shares in Units, shares in Millions						3 Months Ended		9 Months Ended
	Sep. 25, 2017 USD ($)	Sep. 20, 2017 USD ($)	Jan. 03, 2017 USD ($)	Jun. 14, 2016 USD ($)	Mar. 03, 2015 USD ($) $ / shares shares	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Trading_day shares	Sep. 30, 2016 USD ($) shares	Sep. 19, 2017 USD ($)	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Proceeds from issuance of debt								$ 181,843,000	$ 525,000,000
Total debt						$ 1,012,739,000		1,012,739,000			$ 817,024,000
Amortization of deferred financing costs						919,000	$ 818,000	2,718,000	$ 2,981,000
Additional paid-in-capital						893,713,000		$ 893,713,000			879,135,000
Forward stock repurchase transactions amount					$ 140,000,000
Forward stock repurchase transaction, shares | shares								7.2	7.2
Letters of Credit [Member]
Debt Instrument [Line Items]
Restricted cash						7,400,000		$ 7,400,000			7,900,000
Convertible Notes [Member]
Debt Instrument [Line Items]
Forward stock repurchase transaction, shares | shares					7.2
Forward stock repurchase transaction, settlement date					Mar. 01, 2020
12.500% Senior Secured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Aggregate principal amount				$ 525,000,000
Interest rate				12.50%
Unamortized debt premium and consent fees						16,300,000		$ 16,300,000
Interest rate payable term								Semi-annually
Maturity date								Jul. 01, 2022
Loan origination fees								$ 11,400,000
Amortization of deferred financing costs						500,000	400,000	1,600,000	$ 500,000
Debt issuance costs						13,200,000		$ 13,200,000			11,200,000
12.500% Senior Secured Notes Due 2022 [Member] | Condition One [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage of principal amount redeemed								35.00%
Debt instrument redemption price, percentage								112.50%
Outstanding redemption percentage								65.00%
12.500% Senior Secured Notes Due 2022 [Member] | Condition Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price, percentage				100.00%
12.500% Senior Secured Notes Due 2022 [Member] | Condition Three [Member]
Debt Instrument [Line Items]
Debt instrument redemption price, percentage				101.00%
12.500% Senior Secured Notes Due 2022 [Member] | Additional Notes [Member] | January Two Thousand And Seventeen Additional Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount			$ 65,000,000
Issue price as percentage of face value			108.00%
Proceeds from issuance of debt			$ 70,200,000
Loan origination fees								$ 2,000,000
12.500% Senior Secured Notes Due 2022 [Member] | Additional Notes [Member] | September Two Thousand And Seventeen Additional Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount	$ 100,000,000
Issue price as percentage of face value	113.00%
Proceeds from issuance of debt	$ 113,000,000
Accrued interest received	$ 2,900,000
Loan origination fees								2,500,000
12.500% Senior Secured Notes Due 2022 [Member] | Supplemental Indenture [Member]
Debt Instrument [Line Items]
Aggregate principal amount		$ 175,000,000								$ 75,000,000
Increase in debt amount		100,000,000
Additional secured indebtedness		50,000,000
Additional dividends		15,000,000
Consent fees paid		$ 1,400,000
3.75% Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount					$ 361,900,000	361,900,000		$ 361,900,000			361,900,000
Interest rate					3.75%
Interest rate payable term								Semi-annually
Maturity date					Mar. 01, 2020
Amortization of deferred financing costs						400,000	$ 400,000	$ 1,100,000	1,000,000
Debt issuance costs						4,000,000		4,000,000			5,100,000
Debt instrument redemption price, percentage					100.00%
Option granted to initial purchasers					$ 60,000,000
Additional paid-in-capital					100,000,000
Convertible Notes, carrying amount of liability component					261,900,000	$ 306,462,000		$ 306,462,000			292,024,000
Effective interest rate on convertible notes						11.50%		11.50%
Proceeds received from the issuance of the convertible notes					$ 361,900,000
Convertible Notes, unamortized discount						$ 55,400,000		$ 55,400,000			69,900,000
Conversion rate					41.9274
Principal amount					$ 1,000
Conversion price | $ / shares					$ 23.85
Multiples of principal amount					$ 1,000
3.75% Convertible Senior Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Percentage of common share price over conversion price for conversion								130.00%
Common stock price trading days | Trading_day								20
Common stock price consecutive trading days | Trading_day								30
3.75% Convertible Senior Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument redemption price, percentage								98.00%
Common stock price trading days | Trading_day								5
Common stock price consecutive trading days | Trading_day								5
3.75% Convertible Senior Notes [Member] | Issuance Costs [Member]
Debt Instrument [Line Items]
Loan origination fees					10,400,000
Additional paid-in-capital					2,900,000
Issuance cost recorded to deferred financing costs					7,500,000
3.75% Convertible Senior Notes [Member] | Institutional Buyers [Member]
Debt Instrument [Line Items]
Aggregate principal amount					340,000,000
Principal amount of Convertible Notes, subsequently exercised					$ 21,900,000
Amended and Restated Senior Term Facility [Member]
Debt Instrument [Line Items]
Loan origination fees						22,200,000
Amortization of deferred financing costs									$ 1,400,000
Outstanding principal balance paid				$ 287,700,000
Voluntary prepayment premium paid percentage				3.00%
Voluntary prepayment premium paid				$ 8,600,000
Write off of deferred financing costs				$ 6,800,000
Non lender fees						4,100,000
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount						690,000,000		$ 690,000,000			525,000,000
Total debt						$ 706,277,000		$ 706,277,000			$ 525,000,000

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