Debt and Short-Term Borrowings - Total Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total debt	$ 500,042	$ 527,603
Note Payable due on April 30, 2021 \| Notes Payable
Debt Instrument [Line Items]
Note payable	78	175
Note Payable due on January 1, 2022 \| Notes Payable
Debt Instrument [Line Items]
Note payable	1,408	2,231
Term A due on November 27,2023 \| Credit Facility
Debt Instrument [Line Items]
Credit facility	$ 191,423	$ 207,261
Fixed rate	2.00%	2.00%
Term B due on November 27, 2024 \| Credit Facility
Debt Instrument [Line Items]
Credit facility	$ 307,133	$ 317,936
Term B due on November 27, 2024 \| Credit Facility \| LIBOR
Debt Instrument [Line Items]
Minimum variable rate	0.00%	3.50%

Debt Instrument, Interest Rate, Variable Rate Floor

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Fixed interest rate related to the interest rate derivative.

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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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