Income Taxes - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
Gross tax research other tax credit carryforwards	$ 52.3
Accrued interest on unrecognized tax benefits	1.0	$ 0.7	$ 0.5
Net unrecognized tax benefits, excluding interest and penalties, related to foreign tax positions	3.6
Change in valuation allowance	$ (4.4)	$ 3.2	$ 9.4
Benefits of the tax holiday per share	$ 0.01	$ 0.03
Inland Revenue, Singapore (IRAS) [Member]
Income Taxes [Line Items]
Benefits of the tax holiday	$ 0.4	$ 1.7
Indefinite [Member]
Income Taxes [Line Items]
Gross tax research other tax credit carryforwards	$ 12.7
Federal State and Foreign [Member]
Income Taxes [Line Items]
Tax credit expiration period	2037
Operating loss carryforwards expiration date	Dec. 31, 2039
Federal State and Foreign [Member] | Indefinite [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 51.7
Federal State and Foreign [Member] | 2017 [Member]
Income Taxes [Line Items]
Operating loss carryforwards	$ 93.3