Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2019

Derivative Financial Instruments [Abstract]

Gains (Losses) Related to Derivative Instruments Not Designated as Hedging Instruments

The following table summarizes gains (losses) related to derivative instruments not designated as hedging instruments during the three-month periods ended March 31, 2019 and 2018 (U.S. dollars in thousands):

		Amount of Gain (Loss) Recognized in Income
Derivatives not Designated	Location of Gain (Loss)	Three Months Ended March 31,
as Hedging Instruments:	Recognized in Income	2019		2018
Foreign currency contracts	Other income (expense)	$	—	$	—

Gains (Losses) Related to Derivative Instruments Designated as Cash Flow Hedges

The following table summarizes gains (losses) related to derivative instruments recorded in other comprehensive income (loss) during the three-month periods ended March 31, 2019 and 2018 (U.S. dollars in thousands):

	Amount of Gain (Loss) Recognized in Other Comprehensive Loss
Derivatives Designated	Three Months Ended March 31,
as Hedging Instruments:	2019		2018
Foreign currency forward contracts related to intercompany license fee, product sales, and selling expense hedges	$	—	$	(247	)

The following table summarizes gains (losses) relating to derivative instruments reclassified from accumulated other comprehensive loss into income during the three-month periods ended March 31, 2019 and 2018 (U.S. dollars in thousands):

		Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income
Derivatives Designated	Location of Gain (Loss) Reclassified from Accumulated	Three Months Ended March 31,
as Hedging Instruments:	Other Comprehensive Loss into Income	2019		2018
Foreign currency forward contracts related to intercompany license fees and product sales hedges	Revenue	$	—	$	(49	)
Foreign currency forward contracts related to intercompany selling expense hedges	Selling expenses	$	—	$	—