v3.5.0.2
Geographic Information - Schedule of Sales by Geographical Area (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales by geographical area $ 8,989 $ 12,179 $ 30,525 $ 37,641
Central America [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales by geographical area 1,733 1,797 9,713 6,570
South America [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales by geographical area 1,143 2,246 3,556 8,611
Mexico [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales by geographical area 4,329 3,974 10,570 9,906
U.S.-based Latin American Distributors [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales by geographical area 1,653 2,714 5,398 8,547
United States [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net sales by geographical area $ 131 $ 1,448 $ 1,288 $ 4,007