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Derivative Financial Instruments - Summary of Derivative Instruments Designated as Hedging Instruments (Details) - USD ($)	Jun. 30, 2019	Apr. 01, 2019	Dec. 31, 2018	Sep. 01, 2015	Dec. 01, 2014
Derivative [Line Items]
Fair Value	$ 5,000		$ 26,000
Notional amount	$ 100,000,000		150,000,000
Interest rate cap
Derivative [Line Items]
Derivative cap interest rate	4.00%
Interest rate cap, Maturity 5/4/2021
Derivative [Line Items]
Derivative cap interest rate	4.00%
Fair Value	$ 5,000		25,000
Notional amount	$ 50,000,000		50,000,000		$ 50,000,000.0
Interest rate cap, Maturity 4/1/2019
Derivative [Line Items]
Derivative cap interest rate	4.00%
Fair Value	$ 0		0
Notional amount	$ 0	$ 50,000,000.0	50,000,000
Interest rate cap, Maturity 2/3/2020
Derivative [Line Items]
Derivative cap interest rate	4.00%
Fair Value	$ 0		1,000
Notional amount	$ 50,000,000		$ 50,000,000	$ 50,000,000.0

X

- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: 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

Reference 2: 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 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

+ Details

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X

- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

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

+ References

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=118260190&loc=d3e13433-108611

+ Details

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X

- 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

No definition available.

+ Details

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- Details

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- Details

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- Details

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