Derivatives Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Foreign currency forward contracts
Derivative [Line Items]
Notional amount of derivatives, matured during period	$ 31,404,000	$ 41,504,000	$ 62,637,000	$ 75,127,000
Selling, General and Administrative Expenses [Member] | Foreign currency forward contracts
Derivative [Line Items]
Gain recognized in income	1,476,000	201,000
Loss on derivative			$ (59,000)	(144,000)
Minimum
Derivative [Line Items]
Derivative, percentage of forcasted transactions with currency rate exposure			50.00%
Maximum
Derivative [Line Items]
Derivative, percentage of forcasted transactions with currency rate exposure			90.00%
Cash Flow Hedging [Member]
Derivative [Line Items]
Gain (Loss)	916,000	(389,000)	$ 1,186,000	(532,000)
Cash Flow Hedging [Member] | Sales [Member]
Derivative [Line Items]
Loss on derivative	(586,000)	(138,000)	(778,000)	(148,000)
Cash Flow Hedging [Member] | Cost of Sales [Member]
Derivative [Line Items]
Gain recognized in income	$ 1,502,000		$ 1,964,000
Loss on derivative		$ (251,000)		$ (384,000)