Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) and Related Income Tax Effects (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Change in other comprehensive (loss) gain on derivatives, tax expense (benefit)	$ 846	$ 799	$ 3,682
Change in other comprehensive (loss) gain on marketable securities, tax (expense) benefit	(1)	(15)	18
Reclassification adjustments for items included in Net Income on derivatives, tax (expense) benefit	2,737	1,279	(2,608)
Reclassification adjustments for items included in Net Income on marketable securities, tax (expense) benefit	$ 0	$ 7	$ 18