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Derivative Financial Instruments - Summary of Aggregate Amount and Estimated Net Fair Value of Derivative Instruments (Detail) - USD ($) | Dec. 31, 2020 | Mar. 02, 2020 | Dec. 31, 2019 | May 09, 2019 | Nov. 30, 2018 | Oct. 17, 2018 | Nov. 17, 2017 | Jun. 24, 2016
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Interest Rate Swap |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |
Notional |  |  |  |  |  |  |  | $ 150,000,000
Cash Flow Hedge |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |
Notional | $ 400,000,000 |  | $ 400,000,000 |  |  |  |  |
Fair Value of Assets |  |  | 953,000 |  |  |  |  |
Fair Value of Liabilities | 29,842,000 |  | 7,769,000 |  |  |  |  |
Cash Flow Hedge | Interest Rate Swap |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |
Notional | 150,000,000 |  | 150,000,000 |  |  |  |  |
Fair Value of Assets |  |  | 953,000 |  |  |  |  |
Fair Value of Liabilities | 694,000 |  |  |  |  |  |  |
Cash Flow Hedge | Interest Rate Collar |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |
Notional | 250,000,000 |  | 250,000,000 |  | $ 150,000,000 | $ 100,000,000 | $ 100,000,000 |
Fair Value of Liabilities | 13,331,000 |  | 4,330,000 |  |  |  |  |
Cash Flow Hedge | Forward Interest Rate Swaps |  |  |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |  |  |
Notional |  | $ 150,000,000 |  | $ 150,000,000 |  |  |  |
Fair Value of Liabilities | $ 15,817,000 |  | $ 3,439,000 |  |  |  |  |

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- Definition Fair value of all liability derivatives designated as cash flow hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959 + Details
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