Certain Financial Statement Caption Information (Tables)

3 Months Ended

Mar. 31, 2022

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
March 31, 2022
U.S. treasury securities	1 or less	$	41,586	$	-	$	(228	)	$	41,358
Certificates of deposit	1 or less		1,225		-		(4	)		1,221
Total		$	42,811	$	-	$	(232	)	$	42,579
December 31, 2021
U.S. treasury securities	1 or less	$	17,122	$	-	$	(7	)	$	17,115
U.S. treasury securities	>1 and <5		12,049		-		(43	)		12,006
Certificates of deposit	1 or less		1,226		-		(2	)		1,224
Total		$	30,397	$	-	$	(52	)	$	30,345

Schedule of Accrued Expenses

Accrued expenses consisted of the following (in thousands):

	March 31,		December 31,
	2022		2021
Accrued payroll and other employee benefits	$	1,191	$	2,511
Clinical studies		3,818		2,627
Other accruals		308		245
Preclinical studies		238		432
Accrued interest		71		71
Total accrued expenses	$	5,626	$	5,886