Derivatives and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of balance sheet classification and fair values of derivative instruments

The following table summarizes the consolidated balance sheets classification and fair values of the Company’s derivative instruments:

		Fair Value						Notional Amount
		December 31,			December 31,			December 31,		December 31,
	Balance sheet location	2016			2015			2016		2015
		(U.S. $ in thousands)
Assets derivatives -Foreign exchange contracts,  not
designated as hedging instruments	Other current assets	$	1,440		$	866		$	39,982	$	54,586
Assets derivatives -Foreign exchange contracts,
designated as cash flow hedge	Other current assets		37			23			8,348		2,700
Liability derivatives -Foreign exchange contracts,  not	Accrued expenses and
designated as hedging instruments	other current liabilities		(48	)		(432	)		13,273		35,036
Liability derivatives -Foreign exchange contracts,	Accrued expenses and
designated as cash flow hedge	other current liabilities		(61	)		(131	)		7,534		13,682
		$	1,368		$	326		$	69,137	$	106,004