Annual report pursuant to Section 13 and 15(d)

Summary of Long-Term Debt (Detail)

v3.20.4
Summary of Long-Term Debt (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Credit facility $ 314,400 $ 362,400
Second Lien Facility 200,000 200,000
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums 4,903 7,372
Debt Instrument, Unamortized Discount (1,604) (2,415)
Unamortized Debt Issuance Expense (3,299) (4,957)
Long-term Debt 514,400 562,400
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net $ 509,497 $ 555,028
Second Lien Facility    
Debt Instrument [Line Items]    
Credit facility interest rate option one, applicable margin rate over Adjusted LIBOR 7.25%  
Second Lien Facility, Interest Rate 8.00%