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Principal Maturities of Debt (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Debt maturing in 2021 $ 1,250  
Debt maturing in 2022 2,500  
Debt maturing in 2023 1,250  
Debt maturing in 2024 35,000  
Total debt 40,000 $ 192,434
DEG Vietnam Loan    
Debt Instrument [Line Items]    
Debt maturing in 2021 1,250  
Debt maturing in 2022 2,500  
Debt maturing in 2023 1,250  
Total debt 5,000 $ 6,250
US and Euro Denominated Revolving Note    
Debt Instrument [Line Items]    
Debt maturing in 2024 35,000  
Total debt $ 35,000