Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
Deferred tax liabilities related to indefinite lived intangibles	$ 4,900,000
Foreign tax credit carry forwards	$ 8,700,000
Foreign tax credit carryforwards, expiration start year	2023
Foreign tax credit carryforwards, expiration end year	2024
CARES Act income tax benefit	$ 6,700,000
Effective income tax rate from continuing operations	42.60%	(6.00%)
Indefinitely reinvested foreign earnings	$ 0
Income tax provision (benefit), federal rate	21.00%	21.00%
Unrecognized tax benefit	$ 0	$ 0
Unrecognized tax benefit that would affect the effective tax rate if recognized	0
Unrecognized tax benefit, interest accrued	0	$ 0
Operating Loss of 2018 Carry Back to Offset 2013 Taxable Income
Income Taxes [Line Items]
CARES Act income tax benefit	$ 6,500,000
Internal Revenue Service (IRS)
Income Taxes [Line Items]
Minimum change in ownership percentage	50.00%
Measurement of change in ownership period	3 years
Minimum change in ownership percentage held by shareholders directly or indirectly	5.00%
Federal
Income Taxes [Line Items]
Operating loss carry forwards	$ 250,700,000
Operating loss carry forwards, expiration amount	$ 26,000,000
Operating loss carry forwards, expiration year	2036
State and Local Jurisdiction
Income Taxes [Line Items]
Operating loss carry forwards	$ 100,700,000
Operating loss carry forwards, expiration start year	2034
Operating loss carry forwards, expiration end year	2034
Foreign | Luxembourg
Income Taxes [Line Items]
Operating loss carry forwards	$ 143,000,000