Derivatives and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2014

Derivatives and Hedging Activities [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	2014		2013		2014		2013
		(U.S. $ in thousands)
Assets derivatives -Foreign exchange contracts, not designated as hedging instruments	Other current assets	$	3,753	$	301	$	45,000	$	12,490
Assets derivatives -Foreign exchange contracts, designated as cash flow hedge	Other current assets		-		153		-		5,760
Liability derivatives -Foreign exchange contracts, not designated as hedging instruments	Accrued expenses and other current liabilities		(2,901)		(1,543)		18,424		54,000
Liability derivatives -Foreign exchange contracts, designated as cash flow hedge	Accrued expenses and other current liabilities		(1,243)		-		38,426		-
		$	(391)	$	(1,089)	$	101,850	$	72,250