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)

v3.10.0.1
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, 2018
USD ($)
Debt Instrument [Line Items]  
Estimated Fair Value $ 5,093 [1]
Interest Rate Swap Agreement 1  
Debt Instrument [Line Items]  
Notional Amount $ 175,000
Effective Date Dec. 31, 2018
Pay Rate 2.751%
Receive Rate 1-Month LIBOR
Expiration Date Dec. 31, 2022
Estimated Fair Value $ 1,983 [1]
Interest Rate Swap Agreement 2  
Debt Instrument [Line Items]  
Notional Amount $ 137,500
Effective Date Dec. 31, 2018
Pay Rate 2.765%
Receive Rate 1-Month LIBOR
Expiration Date Dec. 31, 2022
Estimated Fair Value $ 1,624 [1]
Interest Rate Swap Agreement 3  
Debt Instrument [Line Items]  
Notional Amount $ 137,500
Effective Date Dec. 31, 2018
Pay Rate 2.746%
Receive Rate 1-Month LIBOR
Expiration Date Dec. 31, 2022
Estimated Fair Value $ 1,486 [1]
[1] Included in other long-term liabilities on the consolidated balance sheet as of December 31, 2018.