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Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ 100
Designated as Hedging Instrument [Member] | June 2019 4 YR Cross Currency Swap [Member]
Derivative [Line Items]
Line Of Credit Facility Forecasted Borrowing Amount	$ 50,000		$ 50,000
Derivative, Fixed Interest Rate	0.82%		0.82%
Gain (Loss) on Foreign Currency Cash Flow Hedge Ineffectiveness	$ 0		$ 0
Designated as Hedging Instrument [Member] | June 2019 2 YR Cross Currency Swap [Member]
Derivative [Line Items]
Line Of Credit Facility Forecasted Borrowing Amount	$ 50,000		$ 50,000
Derivative, Fixed Interest Rate	0.95%		0.95%
Gain (Loss) on Foreign Currency Cash Flow Hedge Ineffectiveness	$ 0		$ 0
Designated as Hedging Instrument [Member] | February 2019 Cross Currency Swap [Member]
Derivative [Line Items]
Line Of Credit Facility Forecasted Borrowing Amount	$ 50,000		$ 50,000
Derivative, Fixed Interest Rate	0.78%		0.78%
Gain (Loss) on Foreign Currency Cash Flow Hedge Ineffectiveness	$ 0		$ 0
Designated as Hedging Instrument [Member] | 2017 Cross Currency Swap [Member]
Derivative [Line Items]
Gain (Loss) on Foreign Currency Cash Flow Hedge Ineffectiveness	0		0
Designated as Hedging Instrument [Member] | 2.25% $100 Million Interest Rate Swap [Member]
Derivative [Line Items]
Line Of Credit Facility Forecasted Borrowing Amount	$ 100,000		$ 100,000
Derivative, Fixed Interest Rate	2.25%		2.25%
Gain (Loss) on Interest Rate Cash Flow Hedge Ineffectiveness	$ 0		$ 0
Designated as Hedging Instrument [Member] | 2.52% $50 Million Interest Rate Swap [Member]
Derivative [Line Items]
Gain (Loss) on Interest Rate Cash Flow Hedge Ineffectiveness	0		0
Designated as Hedging Instrument [Member] | June 2021 4 YR Cross Currency Swap
Derivative [Line Items]
Line Of Credit Facility Forecasted Borrowing Amount	$ 50,000		$ 50,000
Derivative, Fixed Interest Rate	0.57%		0.57%
Designated as Hedging Instrument [Member] | June 2021 3 YR Cross Currency Swap
Derivative [Line Items]
Line Of Credit Facility Forecasted Borrowing Amount	$ 50,000		$ 50,000
Derivative, Fixed Interest Rate	0.66%		0.66%
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 800	$ 300	$ 13,200	$ 7,000
Derivative, Notional Amount	$ 605,000		$ 605,000		$ 536,500

X

- Definition

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

+ References

No definition available.

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Fixed interest rate related to the interest rate derivative.

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Nominal or face amount used to calculate payment on derivative.

+ References

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-Publisher FASB
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-Topic 815
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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.

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