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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
U.S. federal corporate statutory tax rate	21.00%	35.00%
Provisional amount recorded related to deemed repatriation of foreign earnings	$ 1,713	$ (6,426)
Liability for deferred taxes on undistributed foreign earnings	$ 551
State and local net operating loss carry forwards year start	2019
State and local net operating loss carry forwards year end	2038
Tax credit carry-forwards	$ 2,352	1,634
Valuation reserve	5,500	3,900
Additional income tax expense (benefit)	$ 1,500	1,000	$ 200
Income tax positions recognized, minimum percentage	50.00%
Expense for interest and penalties	$ 300	300	$ 200
Maximum [Member]
Income Taxes [Line Items]
Decrease in amount of accrual for uncertain tax positions	500
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Net operating loss carry forward	29,400
Overseas Jurisdictions [Member]
Income Taxes [Line Items]
Net operating loss carry forward	$ 11,500
Tax credit carry-forwards		$ 1,100
Federal Authorities [Member]
Income Taxes [Line Items]
Open tax years	2014 2015 2016 2017 2018
State and Foreign Authorities [Member]
Income Taxes [Line Items]
Open tax years	2013 2014 2015 2016 2017 2018

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