Income Taxes - Reconciliation of Income Taxes Computed at Statutory Rate (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Federal (benefit) provision at statutory rate	$ 6,746,000	$ (9,345,000)	$ 4,527,000
U.S./Foreign tax rate differential	696,000	492,000	393,000
Foreign non-deductible expenses	515,000	702,000	2,059,000
Foreign tax provision	739,000	611,000	793,000
State taxes, net of federal benefit	315,000	(1,086,000)	308,000
State tax rate change, net of federal benefit	(432,000)	0	(41,000)
Change in uncertain tax positions	74,000	71,000	15,000
Change in valuation allowance	366,000	2,146,000	(2,054,000)
Tax credits	(1,341,000)	(143,000)	(2,652,000)
Share-based compensation	(857,000)	(15,000)	(14,000)
Executive compensation (IRC 162m)	1,128,000	0	0
Repatriation of foreign earnings	208,000	37,000	1,235,000
GILTI, net of related foreign tax credit	39,000	(1,340,000)	730,000
Other	197,000	419,000	479,000
(Benefit) Provision for income taxes	$ 8,393,000	$ (7,451,000)	$ 5,778,000