Debt and Short-Term Borrowings - Summary of Total Debt (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total debt	$ 527,603	$ 538,606
Credit Facility \| Term A due on November 27, 2023
Debt Instrument [Line Items]
Credit facility	$ 207,261	$ 217,791
Credit Facility \| Term A due on November 27, 2023 \| LIBOR
Debt Instrument [Line Items]
Margin interest rate	2.00%	2.25%
Credit Facility \| Term B due on November 27, 2024
Debt Instrument [Line Items]
Credit facility	$ 317,936	$ 320,515
Credit Facility \| Term B due on November 27, 2024 \| LIBOR
Debt Instrument [Line Items]
Margin interest rate	3.50%
Minimum variable rate	0.00%
Credit Facility \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility	$ 0	$ 0
Credit Facility \| Senior Secured Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Margin interest rate		2.25%
Notes Payable \| Note Payable due on April 30, 2021
Debt Instrument [Line Items]
Note payable	175	$ 300
Notes Payable \| Note Payable due on January 1, 2022
Debt Instrument [Line Items]
Note payable	$ 2,231	$ 0

Debt Instrument, Interest Rate, Variable Rate Floor

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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