Fair Value Measurements and Derivative Instruments (Foreign Exchange Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative [Line Items]
Derivative Gain (Loss) Recognized in AOCI (Effective Portion)	$ (652)	$ (746)	$ (798)	$ (228)
Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)	78	70	(9)	154
Revenue
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)	79	34	76	6
Cost of sales
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)	(1)	36	(85)	148
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)	119	(599)	154	(549)
Foreign exchange contracts \| Selling, general and administrative expense
Derivative [Line Items]
Derivative Gain (Loss) Recognized in Earnings	(14,828)	789	(18,396)	(1,061)
Interest rate swap
Derivative [Line Items]
Derivative Gain (Loss) Recognized in AOCI (Effective Portion)	$ (771)	$ (147)	$ (952)	$ 321

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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