Annual report pursuant to Section 13 and 15(d)

Long Term Debt - Summary of Company's Interest Rate Swap Agreements Designated as Cash Flow Hedges (Detail)

v3.20.4
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
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.