Derivatives and Hedging (Detail) - Derivative Gains And Losses That Have Been Recognized In Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	$ 1,081	$ 2,393	$ 5,612	$ 6,168
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	1,895	2,762	5,851	6,094
Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	$ (814)	$ (369)	$ (239)	$ 74