Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Summary of Components of Inventories

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

	March 31, 2021		December 31, 2020
	(unaudited)
Raw materials	$	145	$	136
Work in process		888		796
Finished goods		922		932
Total inventories	$	1,955	$	1,864

Summary of Total Revenue by Geographic Region

Total revenue by geographic region (based on the location of the customer) for the three months ended March 31, 2021 and 2020 are as follows (in thousands):

	Three months ended March 31,
	2021		2020
United States	$	1,248	$	841
Japan		480		274
Europe		301		310
Other		183		170
Total	$	2,212	$	1,595

Summary of Numerators and Denominators in Calculation of Basic and Diluted Net Income (Loss) per Share

The numerators and denominators in the calculation of basic and diluted net loss per share were as follows (in thousands except per share amounts):

	Three months ended March 31,
	2021			2020
Numerators:
Net loss	$	(10,134	)	$	(9,948	)
Denominator:
Weighted average shares used to compute basic net loss per share		217,537			195,745
Dilutive common shares from stock options and ESPP		—			—
Weighted average shares used to compute diluted net loss per share		217,537			195,745
Net loss per share:
Basic	$	(0.05	)	$	(0.05	)
Diluted	$	(0.05	)	$	(0.05	)