Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Forecasted borrowings which will be the hedged item in a cash flow hedge.

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The percentage of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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- Definition

Notional Value in Local Currency

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- Definition

Swiss franc per euro floor exchange rate established by the Swiss National Bank

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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- Definition

Average contractual rate at which a foreign currency can be purchased or sold.

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- Definition

Fixed interest rate related to the interest rate derivative.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The net gain (loss) during the reporting period due to ineffectiveness in foreign currency cash flow hedges. Recognized in earnings.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

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The net gain (loss) during the reporting period due to ineffectiveness in interest rate cash flow hedges. Recognized in earnings.

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- Definition

Amount of net unrealized gain (loss) related to the change in fair value of foreign currency exchange rate derivatives designated as cash flow hedging instruments. Recorded in accumulated other comprehensive income to the extent that the cash flow hedge is determined to be effective.

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Financial Instruments (Details) $ in Thousands, € in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 EUR (€)	Dec. 31, 2015 EUR (€)
Derivative Instruments, Gain (Loss) [Line Items]
Long Term Debt Percentage Bearing Fixed Interest Percentage	71.00%		71.00%
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
swiss franc per euro floor	1.2		1.2
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 1,100
Designated as Hedging Instrument [Member] \| Derivative Maturing in 2015 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Value Local Currency \| €			€ 86.0
Derivative, Average Forward Exchange Rate	1.21		1.21
Designated as Hedging Instrument [Member] \| Derivative Maturing in 2016 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Value Local Currency \| €			€ 67.0
Derivative, Average Forward Exchange Rate	1.19		1.19
Designated as Hedging Instrument [Member] \| Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Value Local Currency \| €			€ 0.0	€ 66.5
Derivative, Notional Amount	$ 0	$ 72,700
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax	300	(19,000)
Gain/Loss on FX Effectiveness	0	0
Designated as Hedging Instrument [Member] \| 2.52% $50 Million Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Line Of Credit Facility Forecasted Borrowing Amount	$ 50,000
Derivative, Fixed Interest Rate	2.52%		2.52%
Gain/Loss on IR Effectiveness	$ 0	0
Designated as Hedging Instrument [Member] \| 2.25% $100 Million Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Line Of Credit Facility Forecasted Borrowing Amount	$ 100,000
Derivative, Fixed Interest Rate	2.25%		2.25%
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 353,000	318,700
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 3,300	$ 5,300