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Long-Term Debt - Long-Term Debt (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Debt Disclosure [Abstract]    
Term Loan $ 218,200 $ 246,200
Less current maturities 3,000 3,000
Long term debt, net current portion 215,200 243,200
Unamortized debt issuance costs 2,226 2,709
Long term debt noncurrent $ 213,024 $ 240,541