Income Taxes - Schedule of Reconciliation of Income Tax Provision and Statutory Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Tax expense at statutory rate	$ 2,487	$ 2,802	$ 524
Increase (decrease) in tax resulting from:
State income tax, net of federal benefit	503	(707)	1,337
Change in uncertain tax position reserves	(115)	(236)	73
Permanent differences related to divestitures		(4,201)	7,048
Other permanent differences	601	(842)	693
Impact of rate differences and adjustments	101	884	57
United States tax credits and incentives	153	(2,124)	(354)
Foreign tax credits and incentives	(794)	(1,386)	(1,088)
Change in valuation allowance	(218)	198	1,521
Net deemed distribution on repatriation of foreign earnings			(1,713)
Foreign withholding taxes on repatriation of foreign earnings	242	646	666
Earnout expense (income)	293		(69)
Investment in joint venture	(1,341)
Net effect GILTI and FDII	1,598	399	(172)
Other	162	204	1,095
Income tax provision from continuing operations	$ 3,672	$ (4,363)	$ 9,618