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Principal Maturities of Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Debt maturing in 2016	$ 445
Debt maturing in 2017	2,139
Debt maturing in 2018	3,389
Debt maturing in 2019	3,389
Debt maturing in 2020	2,500
Debt maturing in 2021	126,375
Thereafter	3,750
Total debt	141,987	$ 97,741
Revolving Note (U.S. Dollar)
Debt Instrument [Line Items]
Debt maturing in 2021	123,875
Total debt	123,875	12,000
DEG China Loan
Debt Instrument [Line Items]
Debt maturing in 2016	445
Debt maturing in 2017	889
Debt maturing in 2018	889
Debt maturing in 2019	889
Total debt	3,112	3,497
DEG Vietnam Loan
Debt Instrument [Line Items]
Debt maturing in 2017	1,250
Debt maturing in 2018	2,500
Debt maturing in 2019	2,500
Debt maturing in 2020	2,500
Debt maturing in 2021	2,500
Thereafter	3,750
Total debt	$ 15,000	$ 15,000

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