Summary of Significant Accounting Policies - Schedule of Estimated Useful Life of Assets (Detail)	12 Months Ended
	Dec. 31, 2020
Manufacturing Equipment [Member]
Property Plant And Equipment [Line Items]
Estimated Useful Life	5 years
OCS Consoles Loaned to Customers [Member]
Property Plant And Equipment [Line Items]
Estimated Useful Life	5 years
Computer Equipment and Software [Member]
Property Plant And Equipment [Line Items]
Estimated Useful Life	3 years
Laboratory Equipment [Member]
Property Plant And Equipment [Line Items]
Estimated Useful Life	3 years
Office and Trade Show Equipment [Member]
Property Plant And Equipment [Line Items]
Estimated Useful Life	5 years
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Estimated Useful Life	Shorter of term of lease or 15 years