Business Combinations - Additional Information (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($) Business	Mar. 31, 2019 USD ($) Business
Business Acquisition [Line Items]
Number of businesses acquired \| Business	2	1
Percentage of voting equity interests acquired	100.00%
Goodwill acquired expected to be tax deductible	$ 3,000
Amortization of intangibles	6,680	$ 5,888
Income tax expense (benefit)	5,684	3,354
Administrative [Member]
Business Acquisition [Line Items]
Acquisition-related costs	700	600
Combined Business Acquisitions [Member]
Business Acquisition [Line Items]
Amortization of intangibles	100	1,000
Income tax expense (benefit)	$ 49	$ 300

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The number of businesses acquired by the entity during the period.

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