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Long Term Debt - Summary of Company's Interest Rate Swap Agreements Designated as Cash Flow Hedges (Detail) - Designated as Hedging Instrument - Cash Flow Hedging $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |
Estimated Fair Value | $ 33,847 | [1]
Interest Rate Swap Agreement 1 |  |
Debt Instrument [Line Items] |  |
Notional Amount | $ 137,500 |
Effective Date | Dec. 31, 2018 |
Pay Rate | 2.12% |
Receive Rate | 1-Month LIBOR |
Expiration Date | Dec. 31, 2024 |
Estimated Fair Value | $ 9,905 | [1]
Interest Rate Swap Agreement 2 |  |
Debt Instrument [Line Items] |  |
Notional Amount | $ 175,000 |
Effective Date | Dec. 31, 2018 |
Pay Rate | 2.12% |
Receive Rate | 1-Month LIBOR |
Expiration Date | Dec. 31, 2024 |
Estimated Fair Value | $ 12,721 | [1]
Interest Rate Swap Agreement 3 |  |
Debt Instrument [Line Items] |  |
Notional Amount | $ 137,500 |
Effective Date | Dec. 31, 2018 |
Pay Rate | 2.19% |
Receive Rate | 1-Month LIBOR |
Expiration Date | Dec. 31, 2024 |
Estimated Fair Value | $ 10,416 | [1]
Interest Rate Swap Agreement 4 |  |
Debt Instrument [Line Items] |  |
Notional Amount | $ 150,000 |
Effective Date | Mar. 31, 2020 |
Pay Rate | 0.57% |
Receive Rate | 1-Month LIBOR |
Expiration Date | Mar. 31, 2022 |
Estimated Fair Value | $ 805 | [1]
[1] | Approximately $9,516 is included in accrued other current liabilities and $24,331 is included in other long-term liabilities on the consolidated balance sheet as of December 31, 2020.

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