Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Summary of Marketable Securities

The following table summarizes the Company’s marketable securities at March 31, 2022 and December 31, 2021 (in thousands):

	March 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. treasury securities	$	10,000	$	—	$	(11	)	$	9,989
Total	$	10,000	$	—	$	(11	)	$	9,989
	December 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. treasury securities		10,000		—		(4	)		9,996
Total	$	10,000	$	—	$	(4	)	$	9,996

Summary of Maturities of Marketable Securities

The following table summarizes the maturities of the Company’s marketable securities at March 31, 2022 and December 31, 2021 (in thousands):

	March 31, 2022				December 31, 2021
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than 1 year	$	10,000	$	9,989	$	10,000	$	9,996
Due in 1-2 years		—		—		—		—
Total	$	10,000	$	9,989	$	10,000	$	9,996

Disaggregation of Revenue by Major Source

The following table disaggregates our revenue by major source (in thousands):

	Three Months Ended, March 31,
	2022		2021
Product revenue
Instruments	$	876	$	425
Consumables		2,950		4,206
Instrument rentals		18		19
Total product revenue		3,844		4,650
Contribution revenue		3,390		2,306
Total revenue	$	7,234	$	6,956