Organization and Nature of Business; Basis of Presentation; Principles of Consolidation; Significant Accounting Policies - Narrative (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Convertible notes	$ 49,624,000		$ 49,624,000		$ 107,984,000
Accumulated deficit	(576,734,000)		(576,734,000)		(570,668,000)	$ (558,211,000)
Net loss	(18,523,000)	$ (21,674,000)	(31,988,000)	$ (45,913,000)
Net cash used in operating activities			(25,605,000)	$ (22,928,000)
Cash, cash equivalents, and marketable securities	36,800,000		36,800,000
Total current liabilities	66,929,000		66,929,000		6,945,000
Current portion of convertible notes	$ 56,204,000		56,204,000		0
Impairment charges			$ 0		$ 0
Instrument warranty term			1 year
Kits and accessories warranty term			60 days
Gross margin	0.28	0.38	0.28	0.37
Lease extension	1 year		1 year
Lessor lease term	5 years		5 years
As Previously Reported
Property, Plant and Equipment [Line Items]
Convertible notes	$ 105,828,000		$ 105,828,000
Net loss	(17,803,000)
Total current liabilities	10,725,000		10,725,000
Current portion of convertible notes	$ 0		$ 0
Instruments
Property, Plant and Equipment [Line Items]
Estimated useful life of assets			5 years
Equipment
Property, Plant and Equipment [Line Items]
Lease term	3 years		3 years
Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life of assets			1 year
Lease term	2 years		2 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life of assets			7 years
Lease term	6 years		6 years
2.50% Convertible notes due 2023 | Convertible notes
Property, Plant and Equipment [Line Items]
Interest rate	2.50%		2.50%
2.50% Convertible notes due 2023 | Convertible notes | As Previously Reported
Property, Plant and Equipment [Line Items]
Convertible notes	$ 105,800,000		$ 105,800,000