Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 865,581	$ 843,096
Accumulated depreciation	(406,796)	(376,468)
Net property and equipment	458,785	466,628	[1]
Machinery and Equipment, Gross	301,573	291,331
Furniture and Fixtures, Gross	7,711	7,767
Construction in Progress, Gross	57,250	53,724
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	242,163	241,199
Molds [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	60,381	60,381
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	99,408	98,311
Instruments Placed with Customers [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 97,095	$ 90,383

[1] December 31, 2020 balances were derived from audited consolidated financial statements.