General (Tables)

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

Derivative instruments measured at fair value and their classification on the consolidated balance sheets are presented in the following table (in thousands):

	Assets (liabilities) as of March 31, 2019 (unaudited)					Liabilities as of December 31, 2018
	Notional Amount		Fair Value			Notional Amount		Fair Value
Foreign exchange forward contract derivatives in cash flow hedging relationships - included in accrued expenses and other short term liabilities	$	58,213	$	(731	)	$	75,153	$	(3,628	)
Foreign exchange forward contract derivatives for monetary items included in other current assets and accrued expenses and other short term liabilities	$	26,785	$	72		$	29,162	$	(18	)

Cash, Cash Equivalents and Investments

Cash, cash equivalents, marketable securities and short-term deposits consist of the following (in thousands):

	As of March 31, 2019
	(unaudited)
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized   Loss		Fair Value
Cash and cash equivalents
Money market funds	$	8,815	$	—	$	—	$	8,815
Total	$	8,815	$	—	$	—	$	8,815
Marketable securities
US Treasury securities	$	37,837	$	5	$ *)		$	37,842
Total	$	37,837	$	5	$ *)		$	37,842
Short-term investments
Term bank deposits	$	61,328	$	—	$	—	$	61,328
Total	$	61,328	$	—	$	—	$	61,328

	As of December 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized   Loss			Fair Value
Cash and cash equivalents
Money market funds	$	2,594	$	—	$	—		$	2,594
Total	$	2,594	$	—	$	—		$	2,594
Marketable securities
US Treasury securities	$	39,776	$ *)		$	(6	)	$	39,770
Total	$	39,776	$ *)		$	(6	)	$	39,770
Short-term investments
Term bank deposits	$	70,438	$	—	$	—		$	70,438
Total	$	70,438	$	—	$	—		$	70,438

*) Represents an amount lower than $1

Schedule of Cash and Cash Equivalents and Long Term Restricted Cash

The following table provides a reconciliation of cash and cash equivalents and long term restricted cash reported within the consolidated balance sheets that sum to the total of such amounts in the consolidated statements of cash flows:

	March 31, 2019		March 31, 2018
	(unaudited)
Cash and cash equivalents	$	64,461	$	70,778
Long term restricted cash included in other assets	—		546
Cash, cash equivalents and long term restricted cash shown in the consolidated statement of cash flows	$	64,461	$	71,324

Schedule of Cash and Cash Equivalents and Long Term Restricted Cash

The following table provides a reconciliation of cash and cash equivalents and long term restricted cash reported within the consolidated balance sheets that sum to the total of such amounts in the consolidated statements of cash flows:

	March 31, 2019		March 31, 2018
	(unaudited)
Cash and cash equivalents	$	64,461	$	70,778
Long term restricted cash included in other assets	—		546
Cash, cash equivalents and long term restricted cash shown in the consolidated statement of cash flows	$	64,461	$	71,324