Property and Equipment - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Total cost	$ 57,868	$ 51,429
Less: Accumulated depreciation	(36,020)	(33,906)
Property and equipment, net	21,848	17,523
Land
Property, Plant and Equipment [Line Items]
Total cost	2,900	2,900
Building and Leasehold Improvements
Property, Plant and Equipment [Line Items]
Total cost	$ 15,246	14,302
Building and Leasehold Improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Building and Leasehold Improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	39 years
Production Equipment
Property, Plant and Equipment [Line Items]
Total cost	$ 18,689	18,443
Production Equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Production Equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	7 years
Computer Equipment
Property, Plant and Equipment [Line Items]
Total cost	$ 8,048	7,209
Computer Equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Computer Equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Furniture and Office Equipment
Property, Plant and Equipment [Line Items]
Total cost	$ 4,116	3,066
Furniture and Office Equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Furniture and Office Equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	7 years
Vehicles
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Total cost	$ 713	270
Website Development Costs
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Total cost	$ 601	601
Capitalized Software Development Costs
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Total cost	$ 3,670	3,670
Construction-in-Process
Property, Plant and Equipment [Line Items]
Total cost	$ 3,885	$ 968