Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Summary of Components of Marketable Securities

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

	December 31, 2017									March 31, 2018
	Amortized		Unrealized		Unrealized			Market		Amortized		Unrealized		Unrealized			Market
	Cost		Gains		Losses			Value		Cost		Gains		Losses			Value
U.S. treasuries	$	1,744		-		-			1,744		2,496		-		(1	)		2,495
Corporate bonds		17,099		-		(78	)		17,021		15,952		-		(120	)		15,832
	$	18,843	$	-	$	(78	)	$	18,765	$	18,448	$	-	$	(121	)	$	18,327

Components of Inventory

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

	March 31, 2018		December 31, 2017
Raw materials	$	1,446	$	1,269
Work in process		258		245
Finished goods		306		17
Total	$	2,010	$	1,531

Schedule of Fair Value of Financial Instruments

	As of March 31, 2018
	Level 1		Level 2		Level 3		Total
Marketable securities
U.S. government obligations	$	-	$	2,495	$	-	$	2,495
Corporate obligations		-		15,832		-		15,832
	$	-	$	18,327	$	-	$	18,327

Schedule of Disaggregates by Revenue

The following table disaggregates the Company’s revenue by revenue source for the three months ended March 31, 2018 (in thousands):

Revenue by Customer Type	March 31, 2018
Contract manufacturing	$	3,330
Retail		77
Total Revenue	$	3,407