Fair value of the assets less the liabilities of a derivative or group of derivatives.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

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- Definition

Fixed interest rate related to the interest rate derivative.

+ 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.

+ References

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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=121590274&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=121590274&loc=SL5579245-113959

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Interest Rate Contracts - Summary of Interest Rate Swaps (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Jul. 01, 2020	Mar. 10, 2020	Jul. 09, 2015
Derivative [Line Items]
Fair value of interest rate swap in a net asset (liability) position	$ (37,600,000)	$ (54,000,000.0)
Interest Rate Swap, Effective March 10, 2020 - $150,000 Notional Amount, Interest Rate 0.83%
Derivative [Line Items]
Interest strike rate (percent)	0.83%
Fair value of interest rate swap in a net asset (liability) position	$ (216,000)	(2,963,000)
Derivative notional amount	$ 150,000,000	150,000,000		$ 150,000,000.0
Interest Rate Swap, Effective March 10, 2020 - $100,000 Notional Amount, Interest Rate 0.84%
Derivative [Line Items]
Interest strike rate (percent)	0.84%
Fair value of interest rate swap in a net asset (liability) position	$ (197,000)	(2,023,000)
Derivative notional amount	$ 100,000,000	100,000,000
Interest Rate Swap, Effective March 10, 2020 - $75,000 Notional Amount, Interest Rate 0.86%
Derivative [Line Items]
Interest strike rate (percent)	0.86%
Fair value of interest rate swap in a net asset (liability) position	$ (201,000)	(1,580,000)
Derivative notional amount	$ 75,000,000	75,000,000		75,000,000.0
Interest Rate Swap Effective Date July 1, 2020,$125,000 Notional Amount, Interest Rate 2.82%
Derivative [Line Items]
Interest strike rate (percent)	2.82%
Fair value of interest rate swap in a net asset (liability) position	$ (10,816,000)	(13,896,000)
Derivative notional amount	$ 125,000,000	125,000,000		$ 100,000,000.0
Interest Rate Swap Effective Date July 1, 2020
Derivative [Line Items]
Interest strike rate (percent)	2.82%
Fair value of interest rate swap in a net asset (liability) position	$ (8,690,000)	(11,140,000)
Derivative notional amount	$ 100,000,000	100,000,000
Interest Rate Swap Effective Date July 1, 2020
Derivative [Line Items]
Interest strike rate (percent)	2.83%
Fair value of interest rate swap in a net asset (liability) position	$ (8,684,000)	(11,148,000)
Derivative notional amount	$ 100,000,000	100,000,000
Interest Rate Swap Effective Date July 1, 2020
Derivative [Line Items]
Interest strike rate (percent)	2.84%
Fair value of interest rate swap in a net asset (liability) position	$ (8,755,000)	(11,225,000)
Derivative notional amount	100,000,000	100,000,000
Interest Rate Swap
Derivative [Line Items]
Fair value of interest rate swap in a net asset (liability) position	(37,559,000)	(53,975,000)
Derivative notional amount	$ 750,000,000	$ 750,000,000	$ 425,000,000.0		$ 425,000,000.0