Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Summary of Significant Accounting Policies

Schedule of accounts receivable net

Accounts receivable, net consisted of the following (in thousands):

	March 31,		December 31,
	2021		2020
Trade accounts receivable	$	9,240	$	7,590
Unbilled accounts receivable		1,308		255
Allowance for product returns and price concessions		(233)		(238)
Accounts receivable, net	$	10,315	$	7,607

Schedule of revenue and accounts receivable for each significant customer

	Revenue				Accounts Receivable, net
	Three Months Ended				As of
	March 31,				March 31,		December 31,
Customers	2021		2020		2021		2020
Customer A	*		22	%	16	%	29	%
Customer B	27	%	12	%	39	%	25	%
Customer C	*		11	%	*		*
Customer D	*		11	%	*		*

* Less than 10%

Schedule of fair value of financial assets and liabilities measured on recurring basis

The following tables sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis (in thousands):

	March 31, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	15,820	$	—	$	—	$	15,820
Total assets measured at fair value	$	15,820	$	—	$	—	$	15,820
Liabilities:
Warrant liability	$	—	$	—	$	36	$	36
Total liabilities measured at fair value	$	—	$	—	$	36	$	36

	December 31, 2020
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	14,669	$	—	$	—	$	14,669
Total assets measured at fair value	$	14,669	$	—	$	—	$	14,669
Liabilities:
Warrant liability	$	—	$	—	$	31	$	31
Total liabilities measured at fair value	$	—	$	—	$	31	$	31