Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)
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	1,300,000	100,000
Allowance for uncollectible accounts	0	0
Impairment of property and equipment	$ 0	$ 0
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 with customer, contract term	2 years
Deferred Equipment Agreements | Maximum
Summary of Significant Accounting Policies [Line Items]
Contract with customer, contract term	4 years