Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Income Taxes [Line Items]
Liability for uncertain tax positions		$ 200		$ 300
Income tax expense		$ 779	$ 842
Effective income tax rate		18.60%	31.10%
Foreign Subsidiaries [Member]
Income Taxes [Line Items]
Deferred income taxes on undistributed earnings		$ 800		$ 700
Federal Authorities [Member]
Income Taxes [Line Items]
Open tax years		2016 2017 2018 2019
State and Foreign Authorities [Member]
Income Taxes [Line Items]
Open tax years	[1]	2014 2015 2016 2017 2018 2019

[1] 2014