Certain Financial Statement Caption Information (Tables)

9 Months Ended

Sep. 30, 2020

Certain Financial Statement Caption Information [Abstract]

Schedule of Company's Short-Term Investments

The following table summarizes the Company’s short-term investments (in thousands):

	Maturity	Amortized		Unrealized		Unrealized			Estimated
	(in years)	Cost		Gains		Losses			Fair Value
September 30, 2020
U.S. treasury securities	1 or less	$	37,095	$	29	$	(5	)	$	37,119
Certificates of deposit	1 or less		4,145		24		-			4,169
Total		$	41,240	$	53	$	(5	)	$	41,288
December 31, 2019
U.S. treasury securities	1 or less	$	23,513	$	6	$	(4	)	$	23,515
U.S. treasury securities	>1 and <5		5,035		-		(1	)		5,034
Agency securities	1 or less		5,976		19		(1	)		5,994
Certificates of deposit	1 or less		4,131		22		-			4,153
Certificates of deposit	>1 and <5		1,220		8		-			1,228
Total		$	39,875	$	55	$	(6	)	$	39,924

Schedule of Accrued Expenses

Accrued expenses consisted of the following (in thousands):

	September 30,		December 31,
	2020		2019
Accrued payroll and other employee benefits	$	1,598	$	1,215
Clinical studies		756		442
Other accruals		191		267
Accrued interest		69		71
Preclinical research		17		15
Total accrued expenses	$	2,631	$	2,010