Principal Maturities of Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Debt maturing in 2014	$ 1,336
Debt maturing in 2015	5,432
Debt maturing in 2016	5,244
Debt maturing in 2017	6,656
Debt maturing in 2018	7,127
Debt maturing in 2019	68,997
Total debt	94,792	82,320
US Term Note
Debt Instrument [Line Items]
Debt maturing in 2014	625
Debt maturing in 2015	2,500
Debt maturing in 2016	2,812
Debt maturing in 2017	3,750
Debt maturing in 2018	4,063
Debt maturing in 2019	36,250
Total debt	50,000
Europe Term Loan
Debt Instrument [Line Items]
Debt maturing in 2014	316
Debt maturing in 2015	1,263
Debt maturing in 2016	1,421
Debt maturing in 2017	1,895
Debt maturing in 2018	2,053
Debt maturing in 2019	18,319
Total debt	25,267
US Revolving Note
Debt Instrument [Line Items]
Debt maturing in 2019	13,419
Total debt	13,419
DEG Loan
Debt Instrument [Line Items]
Debt maturing in 2015	1,011
Debt maturing in 2016	1,011
Debt maturing in 2017	1,011
Debt maturing in 2018	1,011
Debt maturing in 2019	1,009
Total debt	5,053	5,561
Capital Leases
Debt Instrument [Line Items]
Debt maturing in 2014	395
Debt maturing in 2015	658
Total debt	$ 1,053	$ 2,440

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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