Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount		$ 2.0
Cumulative Undistributed Earnings of non-U.S. subsidiaries intended to be indefinitely reinvested	$ 33.7
More Likely Than Not Threshold Recognition of Uncertain Tax Position	50.00%
Unrecognized future tax benefits that would favorably impact future effective tax rate if recognized	$ 16.2
Alternative Minimum Tax Credit Refund	0.5
Foreign [Member]
Benefit from a Valuation Allowance Release		$ 0.8
Operating Loss Carryforwards	137.1
U.S. Federal [Member]
Operating Loss Carryforwards	70.4
Tax credit carryovers	$ 14.4
Year that federal tax credits expire	Jan. 01, 2031
Internal Revenue Service (IRS) NOL carryforward expire between 2021 through 2037 [Member]
Operating Loss Carryforwards	$ 37.8
California Franchise Tax Board [Member]
Operating Loss Carryforwards	28.1
Tax credit carryovers	$ 36.5
Tax credit expiration	will not expire
State [Member]
Operating Loss Carryforwards	$ 35.0
Certain Foreign NOLs
Operating loss carryforwards, expiration date	Jan. 01, 2027
Minimum [Member] | U.S. Federal [Member]
Operating loss carryforwards, expiration date	Jan. 01, 2021
Minimum [Member] | California Franchise Tax Board [Member]
Operating loss carryforwards, expiration date	Jan. 01, 2029
Maximum [Member] | U.S. Federal [Member]
Operating loss carryforwards, expiration date	Jan. 01, 2037
Maximum [Member] | California Franchise Tax Board [Member]
Operating loss carryforwards, expiration date	Jan. 01, 2040