Summary of Company's Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Aug. 27, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total debt	$ 99,291		$ 90,775
Current portion	(4,510)		(5,306)
Long-term debt, less current maturities	$ 94,781		85,469
US Term Note
Debt Instrument [Line Items]
Interest Rate	1.83%
Total debt	$ 47,500		49,375
Europe Term Loan
Debt Instrument [Line Items]
Interest Rate	1.50%
Total debt	$ 21,217		23,963
US Revolving Note
Debt Instrument [Line Items]
Interest Rate	1.69%
Total debt	$ 12,000		12,000
DEG China Loan
Debt Instrument [Line Items]
Interest Rate	4.25%
Total debt	$ 3,574		4,805
DEG Vietnam Loan
Debt Instrument [Line Items]
Interest Rate	5.21%	5.21%
Total debt	$ 15,000	$ 15,000
Capital Lease
Debt Instrument [Line Items]
Total debt			$ 632