Geographic Information - Schedule of Sales by Geographical Area (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
|
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Net sales by geographical area | $ 7,057 | $ 5,378 | $ 17,211 | $ 15,682 |
| Central America [Member] | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Net sales by geographical area | 153 | 27 | 573 | |
| South America [Member] | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Net sales by geographical area | 1,874 | 1,941 | 6,045 | 6,116 |
| Caribbean [Member] | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Net sales by geographical area | 1,083 | 1,166 | 2,982 | 2,729 |
| United States [Member] | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Net sales by geographical area | $ 4,100 | $ 2,118 | $ 8,157 | $ 6,264 |