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Derivative Financial Instruments - Narrative (Details) | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) derivative | Apr. 01, 2019 USD ($) | Dec. 31, 2018 USD ($) derivative | Sep. 01, 2015 USD ($) | Dec. 01, 2014 USD ($)
Derivative [Line Items] |  |  |  |  |
Interest rate cap notional value | $ 100,000,000.0 |  |  |  |
Notional amount | 100,000,000 |  | $ 150,000,000 |  |
Estimate that will be reclassified from AOCI as an increase to interest expense over the next twelve months | 300,000 |  |  |  |
Interest rate cap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Interest rate cap notional value | $ 100,000,000.0 |  |  |  |
Derivative cap interest rate | 4.00% |  |  |  |
Interest rate cap | Minimum |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, basis spread on variable rate | 1.20% |  |  |  |
Interest rate cap | Maximum |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, basis spread on variable rate | 1.70% |  |  |  |
Interest rate cap | Cash flow hedging |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Number of interest rate cap transactions | derivative | 2 |  | 3 |  |
Interest rate cap notional value | $ 50,000,000.0 |  |  |  |
Interest rate cap, Maturity 5/4/2021 |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative cap interest rate | 4.00% |  |  |  |
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% |  |  |  |
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% |  |  |  |
Notional amount | $ 50,000,000 |  | $ 50,000,000 | $ 50,000,000.0 |

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- 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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- Definition The percentage points added to the reference rate to compute the variable rate on the interest rate derivative. + References No definition available. + Details
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- 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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- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80845-113994 + Details
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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 No definition available. + Details
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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 + Details
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