Summary of Company's Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total debt	$ 100,553	$ 139,890
Current portion	(2,949)	(3,413)
Long-term debt, less current maturities	$ 97,604	136,477
U.S. Revolving Note (U.S. Dollar Denominations)
Debt Instrument [Line Items]
Interest Rate	4.00%
Total debt	$ 81,000	122,000
U.S. Revolving Note (Euro Denominations)
Debt Instrument [Line Items]
Interest Rate	1.50%
Total debt	$ 7,854	5,727
DEG China Loan
Debt Instrument [Line Items]
Interest Rate	4.25%
Total debt	$ 449	913
DEG Vietnam Loan
Debt Instrument [Line Items]
Interest Rate	5.21%
Total debt	$ 11,250	$ 11,250

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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