Summary of Company's Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total debt	$ 192,434	$ 80,624
Current maturities	(2,500)	(2,500)
Long-term debt, less current maturities	$ 189,934	$ 78,124
U.S. Revolving Note (U.S. Dollar Denominations)
Debt Instrument [Line Items]
Interest Rate	1.65%	3.05%
Total debt	$ 171,500	$ 50,000
U.S. Revolving Note (Euro Denominations)
Debt Instrument [Line Items]
Interest Rate	1.50%	1.25%
Total debt	$ 14,684	$ 21,874
DEG Vietnam Loan
Debt Instrument [Line Items]
Interest Rate	5.21%	5.21%
Total debt	$ 6,250	$ 8,750