Summary of Company's Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 40,000	$ 192,434
Current maturities	(2,500)	(2,500)
Long-term debt, less current maturities	$ 37,500	$ 189,934
U.S. Revolving Note (U.S. Dollar Denominations)
Debt Instrument [Line Items]
Interest Rate	1.33%	1.65%
Total debt	$ 35,000	$ 171,500
U.S. Revolving Note (Euro Denominations)
Debt Instrument [Line Items]
Interest Rate	1.25%	1.50%
Total debt		$ 14,684
DEG Vietnam Loan
Debt Instrument [Line Items]
Interest Rate	5.21%	5.21%
Total debt	$ 5,000	$ 6,250