Fair Value - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Current liability in accounts payable, accrued expenses and other current liabilities	$ 3,200,000		$ 3,200,000		$ 3,700,000
Long-term liability	3,000,000		3,000,000		0
Long term assets	0		0		1,800,000
Current assets	0		0		$ 0
Net gain (loss) on derivatives	$ 4,400,000	$ (4,900,000)	$ (4,300,000)	$ 1,200,000