Derivative Financial Instruments (Details) $ in Millions	Dec. 31, 2019 USD ($) swap_agreement derivative
Derivative [Line Items]
Number of interest rate derivatives \| derivative	8
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Interest Rate Swap - 2017 [Member]
Derivative [Line Items]
Number of interest rate derivatives \| swap_agreement	2
Derivative notional amount \| $	$ 25.0
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Interest Rate Swap - 2018 [Member]
Derivative [Line Items]
Number of interest rate derivatives \| swap_agreement	2
Derivative notional amount \| $	$ 50.0
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Interest Rate Swap - 2019 [Member]
Derivative [Line Items]
Number of interest rate derivatives \| swap_agreement	4
Derivative notional amount \| $	$ 100.0
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Forward Starting Interest Rate Swap [Member]
Derivative [Line Items]
Number of interest rate derivatives \| swap_agreement	8
Derivative notional amount \| $	$ 175.0

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+ 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

Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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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-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

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Derivative Financial Instruments (Details) $ in Millions	Dec. 31, 2019 USD ($) swap_agreement derivative
Derivative [Line Items]
Number of interest rate derivatives \| derivative	8
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Interest Rate Swap - 2017 [Member]
Derivative [Line Items]
Number of interest rate derivatives \| swap_agreement	2
Derivative notional amount \| $	$ 25.0
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Interest Rate Swap - 2018 [Member]
Derivative [Line Items]
Number of interest rate derivatives \| swap_agreement	2
Derivative notional amount \| $	$ 50.0
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Interest Rate Swap - 2019 [Member]
Derivative [Line Items]
Number of interest rate derivatives \| swap_agreement	4
Derivative notional amount \| $	$ 100.0
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Forward Starting Interest Rate Swap [Member]
Derivative [Line Items]
Number of interest rate derivatives \| swap_agreement	8
Derivative notional amount \| $	$ 175.0