Income Tax - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Unremitted earnings from foreign subsidiaries	$ 89.1	$ 80.2
Gross deferred tax asset	21.1	22.0
Gross deferred tax liability	16.4	$ 19.0
Valuation allowance	$ 1.1

Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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