Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Summary of Significant Accounting Policies

Schedule of accounts receivable net

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

	December 31,
	2019		2018
Trade accounts receivable	$	5,454	$	7,297
Unbilled accounts receivable		576		938
Allowance for product returns and price concessions		(231)		(713)
Accounts receivable, net	$	5,799	$	7,522

Schedule of revenue and accounts receivable for each significant customer

	Revenue				Accounts Receivable
	Year Ended December 31,				December 31,
Customers	2019		2018		2019		2018
Customer A	21	%	*		41	%	23	%
Customer B	12	%	*		*		*
Customer C	12	%	*		*		*
Customer D	10	%	13	%	*		*
Customer E	*		*		*		11	%
Customer F	*		*		11	%	*
Customer G	*		11	%	*		*
Customer H	*		10	%	*		*
Customer I	*		*		*		21	%
Customer J	*		*		*		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):

	December 31, 2019
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	12,367	$	—	$	—	$	12,367
Total assets measured at fair value	$	12,367	$	—	$	—	$	12,367
Liabilities:
Warrant liability	$	—	$	—	$	33	$	33
Total liabilities measured at fair value	$	—	$	—	$	33	$	33

	December 31, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	23,478	$	—	$	—	$	23,478
Total assets measured at fair value	$	23,478	$	—	$	—	$	23,478

Schedule of estimated useful lives of the assets

	Useful Lives
Computer and network equipment		2 years
Manufacturing equipment		2 – 7 years
Furniture and fixtures		7 years
Software		3 years