Segment and Geographic Information - Schedule of Sales by Geographical Area (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales by geographical area	$ 10,192	$ 12,179	$ 10,945	$ 14,517	$ 17,937	$ 8,138	$ 10,445	$ 11,624	$ 47,833	$ 48,144	$ 37,895
Central America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales by geographical area									8,223	15,887	17,296
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales by geographical area									9,879	12,767	9,048
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales by geographical area									13,339	8,063	2,908
U.S.-based Latin American distributors [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales by geographical area									11,853	7,240	6,422
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales by geographical area									4,511	2,582	1,051
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
Asia Pacific ("APAC") [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales by geographical area									$ 28	$ 75	$ 209