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Derivative Financial Instruments - Additional Information (Detail) - USD ($) |  |  |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 02, 2020 | May 09, 2019 | Oct. 17, 2018 | Nov. 17, 2017 | Jun. 24, 2016 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Nov. 30, 2018 | Jan. 04, 2018 | Apr. 17, 2017
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, strike rate for the interest rate swap contract |  |  |  |  | 1.145% |  |  |  |  |  | 1.1325%
Realized gains (losses) on interest rate hedges reclassified to earnings |  |  |  |  |  | $ (5,352,000) | $ 1,139,000 | $ 1,372,000 |  |  |
Cash Flow Hedge |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  |  | 400,000,000 | 400,000,000 |  |  |  |
Derivative, strike rate for the forward interest rate swap contract | 0.985% | 2.176% |  |  |  |  |  |  |  |  |
Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  | $ 150,000,000 |  |  |  |  |  |
Derivative, maturity date |  |  |  |  | Jun. 17, 2021 |  |  |  |  |  |
Recognition of hedge ineffectiveness |  |  |  |  |  | 0 |  |  |  |  |
Interest Rate Swap | Cash Flow Hedge |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  |  | 150,000,000 | 150,000,000 |  |  |  |
Interest Rate Collar | Cash Flow Hedge |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  | $ 100,000,000 | $ 100,000,000 |  | 250,000,000 | $ 250,000,000 |  | $ 150,000,000 |  |
Derivative, maturity date |  |  | Jan. 17, 2024 | Nov. 17, 2024 |  |  |  |  |  |  |
Interest rate cap strike rate |  |  | 2.50% | 2.00% |  |  |  |  |  |  |
Floor interest rate |  |  | 2.25% | 1.25% |  |  |  |  |  |  |
Interest Rate Collar | Cash Flow Hedge | Designated |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  | $ 50,000,000 |  |  |  |  |  |  |
Interest Rate Collar | Cash Flow Hedge |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  | $ 50,000,000 |  |  |  |  |  |  |
Interest Rate Collar | Cash Flow Hedge | Designated |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  |  |  |  |  |  | $ 50,000,000 |
Forward Interest Rate Swap | Cash Flow Hedge |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount | $ 150,000,000 | $ 150,000,000 |  |  |  |  |  |  |  |  |
Derivative, maturity date | May 17, 2027 | Jun. 17, 2026 |  |  |  |  |  |  |  |  |
Derivative, effective date | May 17, 2022 | Jun. 17, 2021 |  |  |  |  |  |  |  |  |
Interest Rate Swaps and Collars | Cash Flow Hedge |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount expect to be reclassified out of accumulated other comprehensive income (loss) to earnings in future |  |  |  |  |  | $ (7,934,000) |  |  |  |  |
Estimated time for reclassification out of accumulated other comprehensive income (loss) to earnings |  |  |  |  |  | 12 months |  |  |  |  |

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- Definition Derivative effective date. + References No definition available. + Details
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- Definition Interest rate cash flow hedge gain loss reclassified to earnings net of mark to market. + 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 Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract. + References No definition available. + Details
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- Definition Stated rate on an interest rate forward or futures contract. + References No definition available. + 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 Estimated period for the anticipated transfer of gain (loss), net, from accumulated other comprehensive income into earnings, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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=121549185&loc=d3e80845-113994 + Details
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + 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=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 + Details
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- Definition Fixed interest rate that will be received or paid upon exercise of the interest rate swaption contract. + References No definition available. + Details
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- Definition The net gain (loss) during the reporting period due to ineffectiveness in interest rate cash flow hedges. Recognized in earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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