Stockholder's Equity - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Adjustment decreasing FCTA with an offsetting reduction of Loss on foreign currency, net to correct amounts		$ 7,000
Cash flow hedges loss recorded in AOCI	$ (4,621)		$ (27,559)	$ (35,412)	$ (10,674)
DLV 2000 [Member] | Foreign Exchange Forward [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Cash flow hedges loss recorded in AOCI	$ 20,000