Segment and Geographic Information - Schedule of Sales by Geographical Area (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales by geographical area $ 17,937 $ 8,138 $ 10,445 $ 11,624 $ 11,865 $ 9,867 $ 8,342 $ 7,821 $ 48,144 $ 37,895 $ 34,294
Central America [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales by geographical area                 15,887 17,296 11,767
South America [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales by geographical area                 12,767 9,048 8,633
Mexico [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales by geographical area                 8,063 2,908 1,960
U.S.-based Latin American distributors [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales by geographical area                 7,240 6,422 6,295
United States [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales by geographical area                 2,582 1,051 410
Europe, Middle East and Africa ("EMEA") [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales by geographical area                 1,530 961 4,799
Asia Pacific ("APAC") [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales by geographical area                 $ 75 $ 209 $ 430