v3.5.0.2
Foreign Exchange Hedging Facility - Additional Information (Detail) - Foreign Exchange Forward [Member] - Cash Flow Hedging [Member]
3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
ForwardContract
Sep. 30, 2016
USD ($)
ForwardContract
Derivative Instruments, Gain (Loss) [Line Items]    
Cash flow hedging losses on forward contracts | $ $ 0 $ 325,000
Number of contracts outstanding | ForwardContract 0 0