DERIVATIVES AND HEDGING ACTIVITIES: (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of fair value of derivative contracts

The fair value of derivatives contracts in the unaudited condensed consolidated balance sheets at March 31, 2017 and December 31, 2016 were as follows:

		Other current assets		Accrued liabilities		Other current assets		Accrued liabilities
		March 31, 2017				December 31, 2016
		(in thousands)
Derivatives designated as hedging instruments
	Currency forward and option contracts	$	3,398	$	3	$	257	$	999
Derivatives not designated as hedging instruments
	Currency forward and option contracts	$	—	$	3	$	—	$	7
Total derivatives		$	3,398	$	6	$	257	$	1,006

Schedule of notional amounts of outstanding derivative positions

The notional amounts of outstanding derivative contracts in U.S. dollars at March 31, 2017 and December 31, 2016 were as follows:

	March 31, 2017		December 31, 2016
	(in thousands)
Derivatives designated as hedging instruments
Currency forward and option contracts	$	86,729	$	105,730
Derivatives not designated as hedging instruments
Currency forward and option contracts	$	44,879	$	34,330

Schedule of designated derivative contracts as cash flow hedges and their impact on OCI

The following table represents the unrealized gains (losses) of derivatives designated as hedging instruments, net of tax effects, that were recorded in accumulated other comprehensive income as of March 31, 2017 and December 31, 2016 and their effect on OCI for the three months endedMarch 31, 2017:

	(in thousands)
December 31, 2016	$	(692	)
Amount of gain recognized in OCI (effective portion)	5,680
Amount of gain reclassified from OCI to income (effective portion)	(1,436		)
March 31, 2017	$	3,552

Effect of derivative contracts on the condensed consolidated statement of operations

The effect of derivative contracts on the unaudited condensed consolidated statements of operations for the three months endedMarch 31,2017 and 2016 was as follows:

	Derivatives designated as hedging instruments				Derivatives not designated as hedging instruments
	Three Months Ended March 31,				Three Months Ended March 31,
	2017		2016		2017		2016
	(in thousands)
Operating income	$	1,436	$	138	$	—	$	—
Other income	$	—	$	—	$	2,066	$	272