Property, Plant, and Equipment - Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 194,115	$ 183,470
Less: accumulated depreciation	(104,672)	(92,074)
Property, plant and equipment, net, total	89,443	91,396
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,951	3,951
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	24,533	24,533
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	49,289	45,067
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,790	9,095
Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	67,474	66,542
Manufacturing Test Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	31,278	27,378
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 6,800	$ 6,904