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Derivatives (Schedule of Open Interest Rate Contracts) (Details) - Long $ in Millions	Dec. 31, 2019 USD ($)
Interest rate component of debt - not accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 23.0
Interest Rate	1.90%
Interest rate component of debt - not accounted for as a hedge | Collar
Derivative [Line Items]
Initial Notional Amount	$ 40.0
Interest rate component of debt - not accounted for as a hedge | Collar | Minimum
Derivative [Line Items]
Derivative, Fixed Interest Rate	3.50%
Interest rate component of debt - not accounted for as a hedge | Collar | Maximum
Derivative [Line Items]
Derivative, Fixed Interest Rate	4.80%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 20.0
Interest Rate	1.80%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 10.0
Interest Rate	2.60%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 20.0
Interest Rate	2.70%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 40.0
Interest Rate	2.60%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 25.0
Interest Rate	2.50%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 50.0
Interest Rate	2.50%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 100.0
Interest Rate	2.50%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 50.0
Interest Rate	2.50%
Interest rate component of debt - accounted for as a hedge | Swap
Derivative [Line Items]
Initial Notional Amount	$ 50.0
Interest Rate	2.50%

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

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- Definition

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+ References

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