Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Summary of Components of Marketable Securities

The following is a summary of the components of our marketable debt securities and the underlying fair value input level tier hierarchy (see long-lived assets below) (in thousands):

	As of June 30, 2019
	Amortized		Unrealized			Market
	Cost		Losses			Value
U.S treasuries	$	1,174	$	(1	)	$	1,173
Corporate bonds		3,512		-			3,512
	$	4,686	$	(1	)	$	4,685

	As of December 31, 2018
	Amortized		Unrealized			Market
	Cost		Losses			Value
U.S treasuries	$	2,401	$	(3	)	$	2,398
Corporate bonds		4,310		(21	)		4,289
	$	6,711	$	(24	)	$	6,687

Components of Inventory

The components of inventory are as follows (in thousands):

	June 30, 2019		December 31, 2018
Raw materials	$	960	$	1,374
Work in process		452		371
Finished goods		614		158
	$	2,026		1,903

Schedule of Fair Value of Financial Instruments

We account for our marketable debt securities at fair value pursuant to GAAP, with the net unrealized gains or losses reported as a component of accumulated other comprehensive income or loss.

	As of June 30, 2019
	Level 1		Level 2		Level 3		Total
Marketable debt securities
U.S. government obligations	$	-	$	1,173	$	-	$	1,173
Corporate obligations		-		3,512		-		3,512
	$	-	$	4,685	$	-	$	4,685

	As of December 31, 2018
	Level 1		Level 2		Level 3		Total
Marketable debt securities
U.S. government obligations	$	-	$	2,398	$	-	$	2,398
Corporate obligations		-		4,289		-		4,289
	$	-	$	6,687	$	-	$	6,687

Schedule of Deferred Revenue

The following table disaggregates the Company’s deferred revenue by recognition period (in thousands):

Recognition Period	Deferred Revenue
0-12 Months	$	111
13-24 Months		96
Over 24 Months		95
Total	$	302

Schedule of Disaggregation by Revenue

The following table disaggregates the Company’s revenue by revenue source for the three and six months ended June 30, 2019 and 2018 (in thousands):

	For the Three Months ended				For the Six Months Ended
Revenue by Customer Type	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Contract manufacturing	$	1,452	$	3,106	$	3,576	$	6,440
Retail and others		199		80		393		154
Total revenue	$	1,651	$	3,186	$	3,969	$	6,594