Certain Balance Sheet Items - Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 185,005	$ 186,763
Less accumulated depreciation and amortization	(55,443)	(55,257)
Property, plant and equipment, net	129,562	131,506
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	52,275	52,294
Land and buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	47,040	47,053
Manufacturing equipment and machinery
Property, Plant and Equipment [Line Items]
Property and equipment, gross	29,961	28,860
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	23,044	25,680
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	16,932	16,577
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,281	11,152
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,472	$ 5,147