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Long Term Debt Activity - Summary of Company's Interest Rate Swap Agreements Designated as Cash Flow Hedges (Detail) - Designated as Hedging Instrument - Cash Flow Hedging $ in Thousands | 9 Months Ended
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Sep. 30, 2019 USD ($)
Debt Instrument [Line Items] |  |
Estimated Fair Value | $ 18,988 | [1]
Interest Rate Swap Agreement 1 |  |
Debt Instrument [Line Items] |  |
Notional Amount | $ 137,500 |
Effective Date | Dec. 31, 2018 |
Pay Rate | 2.75% |
Receive Rate | 1-Month LIBOR |
Expiration Date | Dec. 31, 2022 |
Estimated Fair Value | $ 5,778 | [1]
Interest Rate Swap Agreement 2 |  |
Debt Instrument [Line Items] |  |
Notional Amount | $ 175,000 |
Effective Date | Dec. 31, 2018 |
Pay Rate | 2.75% |
Receive Rate | 1-Month LIBOR |
Expiration Date | Dec. 31, 2022 |
Estimated Fair Value | $ 7,346 | [1]
Interest Rate Swap Agreement 3 |  |
Debt Instrument [Line Items] |  |
Notional Amount | $ 137,500 |
Effective Date | Dec. 31, 2018 |
Pay Rate | 2.77% |
Receive Rate | 1-Month LIBOR |
Expiration Date | Dec. 31, 2022 |
Estimated Fair Value | $ 5,864 | [1]
[1] | Approximately $3,746 of the total is included in accounts payable and accrued expenses and $15,242 is included in other long-term liabilities on the condensed consolidated balance sheet as of September 30, 2019.

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