Fair Value Measurements and Derivative Instruments (Foreign Exchange Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative [Line Items]
Derivative Gain (Loss) Recognized in AOCI (Effective Portion)	$ (866)	$ (381)	$ (1,665)	$ (609)
Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)	14	(198)	5	(44)
Revenue
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)	(38)	(139)	38	(133)
Cost of sales
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)	52	(59)	(33)	89
Interest Expense
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)	0	0	0	0
Foreign exchange contracts
Derivative [Line Items]
Derivative Gain (Loss) Recognized in AOCI (Effective Portion)	(42)	(152)	111	(701)
Foreign exchange contracts \| Selling, general and administrative expense
Derivative [Line Items]
Derivative Gain (Loss) Recognized in Earnings	(1,948)	(655)	(20,344)	(1,716)
Interest rate swap
Derivative [Line Items]
Derivative Gain (Loss) Recognized in AOCI (Effective Portion)	$ (824)	$ (229)	$ (1,776)	$ 92

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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-Publisher FASB
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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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