Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended
	Mar. 31, 2022 USD ($) segment reportingUnit	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segment | segment	1
Other-than-temporary impairments related to marketable securities	$ 0	$ 0
Cash, FDIC insured amount	250,000
Inventory write-down	1,000,000	100,000
Allowance for uncollectible accounts	$ 0		$ 0
Number of reporting unit | reportingUnit	1
Goodwill impairment	$ 12,026,000	0
Impairment of property and equipment or intangible assets	0	0
Selling, general and administrative	14,385,000	16,252,000
Research and development	8,003,000	$ 9,370,000
Prepaid expenses and other current assets	9,064,000		$ 5,326,000
Interest or penalties charged in relation to the unrecognized tax benefits	0
CARES Employee Retention Credit
Summary Of Significant Accounting Policies [Line Items]
Cost of products sold	1,500,000
Selling, general and administrative	1,400,000
Research and development	1,700,000
Prepaid expenses and other current assets	4,600,000
Tax Year 2021
Summary Of Significant Accounting Policies [Line Items]
Income taxes receivable	4,000,000
Tax Year 2020
Summary Of Significant Accounting Policies [Line Items]
Income taxes receivable	$ 600,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Customers payment period	30 days
Property and equipment, estimated useful lives	3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Customers payment period	60 days
Contracts with customers, expected duration	1 year
Property and equipment, estimated useful lives	5 years
Deferred Equipment Agreements
Summary Of Significant Accounting Policies [Line Items]
Up-front charge	$ 0
Deferred Equipment Agreements | Minimum
Summary Of Significant Accounting Policies [Line Items]
Contract term	2 years
Deferred Equipment Agreements | Maximum
Summary Of Significant Accounting Policies [Line Items]
Contract term	4 years