Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Income Taxes [Line Items]
Liability for uncertain tax positions	$ 200		$ 200		$ 100
Income tax expense	$ 199	$ 564	$ 750	$ 1,343
Effective income tax rate	34.30%	14.80%	30.90%	16.80%
Foreign Subsidiaries [Member]
Income Taxes [Line Items]
Deferred income taxes on undistributed earnings			$ 1,200		$ 900
Federal Authorities [Member]
Income Taxes [Line Items]
Open tax years			2017
State and Foreign Authorities [Member]
Income Taxes [Line Items]
Open tax years			2015