Revenue

9 Months Ended

Sep. 30, 2021

Revenue From Contract With Customer [Abstract]

Revenue

3. Revenue

Disaggregation of revenue

	Three months ended September 30,						Nine months ended September 30,
	2021			2020			2021			2020
Minerva ES		46.1	%		45.0	%		46.8	%		59.5	%
Genesys HTA		31.2	%		35.4	%		32.0	%		26.2	%
Symphion		22.0	%		18.7	%		20.2	%		13.6	%
Other		0.7	%		0.9	%		1.0	%		0.7	%
		100	%		100	%		100	%		100	%

For the three and nine-month periods ended September 30, 2021 and 2020, approximately 99.0% of the Company’s revenue is subject to point-in-time recognition for single-use (disposable) products and capital equipment. Sale of extended warranties on capital equipment represents less than 1.0% of the Company’s revenue. In addition, more than 95.0% of the Company’s total revenue is derived from the sale of single-use (disposable) products; therefore, the Company did not include disaggregated revenue data to present the amounts attributed to capital equipment, associated warranties, and miscellaneous revenue separately.

Contract balances

The Company’s contract balances consist of the following (in thousands):

	September 30,		December 31,
	2021		2020
Accounts receivable	$	6,758	$	8,379
Contract liability—current	$	262	$	219