Property and Equipment - Summary of Components of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 87,338	$ 88,965
Less: Accumulated depreciation and amortization	(64,978)	(65,457)
Property and equipment, net	22,360	23,508
Computers and Purchased Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	25,585	25,775
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	4,260	4,198
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	2,673	2,672
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	36,295	37,325
Land
Property Plant And Equipment [Line Items]
Property and equipment, gross	3,091	3,091
Building
Property Plant And Equipment [Line Items]
Property and equipment, gross	4,765	4,765
Building Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	7,285	7,291
Trial Systems at Customers' Sites
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 3,384	$ 3,848

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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