Maximum consolidated leverage ratio permitted under debt agreements.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

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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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No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Debt (Narrative) (Details) € in Thousands		1 Months Ended		12 Months Ended
Debt (Narrative) (Details) € in Thousands	Dec. 19, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2019 EUR (€)	Mar. 14, 2019 USD ($)	Dec. 31, 2015 EUR (€)	Sep. 30, 2014 USD ($)	Jul. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Line of Credit Facility [Line Items]
Outstanding credit facility balance				$ 288,765,000	$ 398,937,000
Interest paid				$ 29,700,000	34,700,000	$ 37,600,000
Senior Notes
Line of Credit Facility [Line Items]
Consolidated leverage ratio under credit facility & note payable, maximum				3.50%
Outdated Unsecured Short Term Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowing capacity		$ 700,000,000
Amended And Restated Unsecured Short Term Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowing capacity		$ 850,000,000
Debt instrument, term		5 years
Outstanding credit facility balance				$ 288,800,000	$ 398,900,000
Credit Facility weighted average interest rates on outstanding balance				2.78%	3.63%		2.78%
Reduction of credit facility availability				$ 1,400,000	$ 1,300,000
Consolidated leverage ratio under credit facility & note payable, maximum				3.50%
Amended And Restated Unsecured Short Term Revolving Credit Facility \| Minimum
Line of Credit Facility [Line Items]
Debt instrument, term				30 days
Commitment fees				0.075%
Amended And Restated Unsecured Short Term Revolving Credit Facility \| Maximum
Line of Credit Facility [Line Items]
Debt instrument, term				180 days
Commitment fees				0.25%
Amended And Restated Unsecured Short Term Revolving Credit Facility \| LIBOR \| Minimum
Line of Credit Facility [Line Items]
Credit spread during period				0.875%
Amended And Restated Unsecured Short Term Revolving Credit Facility \| LIBOR \| Maximum
Line of Credit Facility [Line Items]
Credit spread during period				1.375%
Amended And Restated Unsecured Short Term Revolving Credit Facility \| Prime Rate \| Maximum
Line of Credit Facility [Line Items]
Credit spread during period				0.375%
Uncommitted Shelf Facility
Line of Credit Facility [Line Items]
Debt instrument, term	15 years
Principal Amount	$ 50,000,000
2023 Series A Notes and 2025 Series B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount												$ 150,000,000
2023 Series A Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount				$ 75,000,000								$ 75,000,000
Stated interest rate				3.94%			3.94%					3.94%
2025 Series B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount				$ 75,000,000								$ 75,000,000
Stated interest rate				4.04%			4.04%					4.04%
2026 Senior Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount				$ 75,000,000						$ 75,000,000
Stated interest rate				3.72%			3.72%			3.72%
2021 Series A Notes and 2024 Series B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount											$ 125,000,000
2021 Series A Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount				$ 50,000,000							$ 50,000,000
Stated interest rate				3.32%			3.32%				3.32%
2024 Series B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount				$ 75,000,000							$ 75,000,000
Stated interest rate				3.76%			3.76%				3.76%
2025 Series C Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount \| €							€ 88,857		€ 88,900
Stated interest rate		1.785%		1.785%			1.785%		1.785%
2022 Series A Notes and 2027 Series B Notes [Member] \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount	150,000,000
2022 Series A Notes \| Senior Notes
Line of Credit Facility [Line Items]
Debt instrument, term			7 years
Principal Amount	$ 75,000,000			$ 75,000,000
Stated interest rate	3.25%			3.25%			3.25%
2027 Series B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Debt instrument, term			12 years
Principal Amount	$ 75,000,000			$ 75,000,000
Stated interest rate	3.72%			3.72%			3.72%
2029 Series C Notes \| Senior Notes
Line of Credit Facility [Line Items]
Principal Amount				$ 100,000,000				$ 100,000,000
Stated interest rate				4.19%			4.19%	4.19%