Derivatives and Hedging (Detail) - Derivative Gains And Losses That Have Been Recognized In Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	$ 1,594	$ 2,322
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	1,375	1,987
Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Total expense, net	$ 219	$ 335